99% Invisible - Hidden Levels #2: Stick It to 'Em

Episode Date: October 10, 2025

From airplanes to Pac-Man to the battlefield, the joystick has quietly shaped the way humans connect with machines.Hidden Levels is a production of 99% Invisible and WBUR's Endless Thread. Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.  Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Roman Mars, when I say Konami code, does this mean anything to you? Ben Brock Johnson, it means zero to me, actually. I have no idea what you're talking about. I mean, when you say code, maybe I think of a cheat code. That's about it. That's all I got. You're getting warm. You're getting warm.

We were mentioning all these kind of Easter eggs and cheat codes at the end of our first episode about NBA jam. And this is maybe the most famous, I would say, at least in some circles, so-called cheat code of all time. And it originated in a game called Gradius in 1986. So Gradius Roman is this spaceship shooter game, which I think both you and I enjoy. Totally. It was made by the Japanese entertainment company Konami. And Gradius, it had this code in it. The code would give you power-ups in the game, so like bigger guns, more shields, things like that, to help you fight the bad guys.

To access this cheat code, there's a series of buttons and movements. And this code became a signature of Gradius, and it was so popular, it was copied into other games. So, for example, Roman, you might know this as the Contra code. Yes, that sounds more familiar. Yeah, that's a side-scrolling shooter, contra, right? Yeah, absolutely. And if you use this cheat code, you'd get 30 extra lives, which was important for Contra because Contra could be a hard game. Having 30 lives helps.

So this code is now so popular. It's also been reused, for instance, in Google Home. If you put this into Google Home, you'll get an interesting response. It's almost become its own kind of meme or reference. It's this wink from gamer to gamer that you both know this piece of video game lore. Okay. So if this cheat code is everywhere, like, Like, how do you access it?

It is a series of moves on the controller, up, up, down, down, left, right, left, right, button or select, Roman, or B or A, depending on, you know, what controller you're using, what game. But the constant here, Roman, is the up, up, up, down, left, right, left, right, which admittedly sounds like gibberish when we say it out loud. but the difficulty of executing this particular cheat code really depends on the controller. It could definitely cramp your fingers on the Nintendo, but this code was so much easier for consoles that use an actual joystick. I could totally see it being easier on a joystick

because that's what a joystick is for is for going up and down. It's kind of the er controller. And a lot of things are designed around the joystick itself. That's right. There's so much that flows out of the joystick. joystick's development. And so that's what we're going to talk about today. This is Hidden Levels, our series about how the video game world has changed the world beyond video games. And today,

we're going to find out how the joystick was created and why it has endured. Hidden Levels is our collaboration between 99% Invisible and Ben's podcast from WBUR, Endless Thread. And my Endless Thread co-host, Amory Seavertson, brings us this one. Enjoy. It was mid-December, 1903, on the northern coast of North Carolina. Two brothers, known at the time for a thriving bicycle business, were about to change the world. Orville and Wilbur Wright were about to go from peddling to piloting in engine-powered airplane. Now, I remember hearing about the Wright brothers in school, but what I did not know until recently is how they flew this thing.

It was a full-body activity. Rather than sitting upright, the pilot was in a prone position. Wilbur Wright, we'll go with him since he made the longer flight. Sorry, Orville. Wilbur's hips were resting in something called the hip cradle, pieces of wood on either side that were connected to the tips of the wings of the plane with wire. So as Wilbur tilted his hips right and left,

he was tilting the plane right and left. The up and down tilt of the plane was controlled by a lever in Wilbur's left hand, connected by a pulley system. This flight was an incredible feat, all 59 seconds of it. Yep, that's it. Because as the Wright brothers would be the first to tell you,

Their plane was really hard to control. They trained for months trying to get that hip-lean and lever tilt just right. But it was a little like patting your head and rubbing your stomach at the same time, except taking your life in your hands and hips. But just a few years later, in 1907, a French aviation pioneer, Robert Esno Peltri, suggested a new streamlined solution for bringing human and machine. together, a way to maneuver a plane up and down and right and left, with a single stick.

All that mobility and control in the palm of one hand, almost like an extension of the self. As No Peltoree never experienced this for himself, but he did secure the patent for this new instrument, unaware that what he was patenting would end up in military planes and machinery, but also in arcades and homes around the world. I'm talking about the joystick. The origins of the term joystick are a bit murky. Some credit the British actor and aviator Robert Lorraine, who used it in a diary entry in 1910. Others claim the joystick was originally the Joyce stick, named for a different early 20th century aviator and inventor, James Henry Joyce of Missouri. One thing scholars largely do agree on, contrary to what you might read on the internet,

the joy in joystick does not have to do with its positioning between the legs of the pilot, like you might see in many World War I era planes. It's simply the exhilaration, the joy of taking flight. Now, most of us haven't personally taken flight, but we've likely controlled something with a joystick. I'm going to get it. I'm going to get it right by the head. Those claw arcade games where you try to grab onto a stuffed animal.

Maybe some sort of forklift or construction vehicle? Or most likely. I want this guy with a crazy blue hair. Ludwig. Ludwig. How do I select? A video game. The most important part is the joystick, so use that to steer.

This is my friend Philip. Oh, top right is jump. My other friend Kelly. Hey, come on. Sorry. And my husband, Mike, all bearing with me. Oh, I feel like I'm enduring a lot of hits. In Baby's first game of Mario Kart.

I'm staying on the road. It's a miracle. Experienced players would agree. The joystick has made video game controller, what they are. Easy, precise, and fun. I finished. Hey, you've advanced.

You've advanced. And yet, it's only in recent decades that most of us have even had them within reach. In many ways, video games and joysticks and other controllers were moonlighting projects for a lot of engineers and early computer scientists.

This is David O'Grady. He's a lecturer in design media arts at UCLA and a researcher in its game lab. And he told me that a lot of the first video games were developed in labs. But these ones were at institutions and companies known for working on technological developments for the military. You know, it was a way to kind of use your downtime to develop something other than some kind of military application or a missile tracking system. Or you might try to make a game just as a sideline kind of problem. One such engineer using his downtime to create a downtime activity was Ralph Bayer, the guy who invented the first home video game console, the Magnavox Odyssey in 1972. The electronic game of the future, Odyssey easily attaches to any brand TV black and white or color to create...

The Odyssey's controls were knobs that you'd twist to do things like play a game of tennis. The horizontal knob on the left side of each player control unit allows you to move your player light in the left to right or right to left direction. The vertical knob on the right side of each player control unit lets you move your player light in an up and down direction. I don't know. This sounds a little like the right brothers, rocking their hips to move the plane one way,

pulling a lever to move at another. Clunky. Takes them getting used to. But what if, just like an aviation, we streamlined the maneuvering, with a single, joyful stick. Ralph Baer did actually make a prototype of a video game joystick, but he wasn't the first to incorporate it into a game you'd see on shelves, David says.

It would actually take until a little later in the 1970s for us to see commercially a device that we would call a joystick today. In fact, it was the Atari joystick, which is absolutely iconic. This little kind of squat black box with this stock on top of it and a single red button to the side, this is kind of the first moment where the joystick becomes, you know, not just a specialty piece of military hardware or something that airline pilots control when they fly, but something that all of us have access to. This accessible joystick came with the Atari VCS, or video computer. system, first released in 1977, and better known today as the Atari 2,600. Don't watch television tonight. Play it. Imagine what it must have been like as a kid back then, to have a game on your TV that you

get to control using the same tool that's been used to fly planes. And yet, it's childishly simple to operate, almost no learning curve. Just power. and possibilities. So where does the joystick's power come from? What makes it so great? It starts with the term you hear a lot when talking joysticks with an expert like David O'Grady. An interface for flying is probably how we would describe it today.

Interface, a point where two things meet, human and machine. And so a flight stick, a joystick, the kinds of controllers that we use today for video games and other applications, these are all an attempt to solve a fundamental issue, which is how do you provide human input to a device or a machine? In other words, what are the physical instruments that allow us to turn intention into action, that help make a machine feel like an extension of the self?

And what the joystick really has going for it? is this idea of affordance. What does the interface you're using enable, right? What does it allow you to do? For example, David says, our human biomechanics afford us the ability to walk, to move ourselves through space. A joystick affords us the ability

to move something else through space without really having to think about it. Exactly. I think that's such an important part of interface design from joysticks to mice to everything else, that in some ways it is a kind of invisible art. For most applications, we want the interface to disappear. We want to look at where we're pointing,

not at the hand that's doing the pointing, right? You want it to feel like mind control. Like we're just controlling things with our mind without having to. Yeah, exactly. There's something very automatic about it, right? What David's getting at here is really a number. another meaning of affordance. It's not just about what an interface allows us to do.

It's knowing how to do it, intuitively. There's a kind of direct manipulation quality to it. Do you want to move forward on a screen? Press the stick forward. Do you want to move backwards within the environment of the screen? Pull the stick backwards. Do you want to go left? The joystick has what's called perceived affordance.

You see one and you know exactly how to. to use it. Compare that to those knobs on the Magnavox Odyssey. Sure, you can imagine that you should probably twist them, but what does that motion have to do with moving through space? Now, with a joystick... The motion of your hand and arm deeply corresponds with what's happening on screen. You don't really need to read an instruction manual to do that. This was just the pep talk I needed before taking a few. field trip to a joystick wonderland. So everything's usable, but it does go chronological.

Jeff Boojack is the owner of Prodigy, an 8,000 square foot game room in Western Massachusetts with a glow-in-the-dark mini golf course in the center, hell yeah, and a perimeter of more than 6,000 retro video games and their consoles dating back to the late 70s. It's pretty much just my collection. I'm an organized hoarder. Jeff has all matter of retro video game accessories, too. The Nintendo Power Glove, a short-lived, ill-performing motion control device that made you look like a space movie badass from the forearm down. Jeff's got it.

This was horrible, because for every game you had to put it into different code. The Logitech NetPlay, basically a full-sized keyboard scooched between two halves of a modern-ish game controller. Jeff has that, too. This was the, hey, let's just combine everything, because computers, at this point, we're starting to really take off. This was like... But most importantly, Jeff has the Atari 2,600. I mean, this is a beast.

This was probably the best built controller. I'd driven two hours to see one of these nearly 50-year-old home consoles in person. And? They're boring looking. Oh, yeah. I mean, they're... I'm sure they were very exciting for the time, but yeah, this looks like this could be your your grandpa's radio or something.

Exactly, yeah. It's just black and brown and nothing that says, like, spend a lot of time with me. But Jeff kindly fired it up for me. And then, of course, you have to turn it down, that's incredibly wild. So I could experience the Atari joystick for myself in a game of Pac-Man.

And then you just move a joystick. That's it. What's the button for then? Nothing. This game has... With a little square joystick panel stick, steadied on my lap with my left hand, and my right fist, white-knuckling the joystick. I jolt it right, left, forward, back, trying to gobble up as many little Pac-Man pellets as I can, until...

You're being thrown right in. I'm supposed to avoid the ghosts. Okay. Yep, yeah, we're supposed to get the small pellets. I meet a demise so swift, I think even Jeff is surprised. But I try again, and pretty quickly, I realized something that he'd actually warned me about with the Atari joystick. Oh, it is rigid.

I'm having a hard, like, it's not as responsive as I thought it would be. Nope. No. This iconic device sucks. It's stiff to the point where it hurts my wrist minutes into the game. Could you imagine hours? No. But back when the Atari joystick was a novel thing in the late 70s, people did spend hours with it.

Pac-Man, Space Invaders, Adventure. you could play 1,300 different game variations with this one joystick console. Have you played Defender? It's the newest of the smash-at-home video games that just keep coming. Before people had home computers or the internet, or even just a wider variety of TV channels, this was the epitome of joy. This is all you did. I mean, I'm sure when a family got, this, kids were playing with these joysticks for seven, eight hours

at a time, their hands and wrists must have gotten massive fatigue, like massive fatigue. I can only play these for maybe ten minutes. And that's where this frees that up. By this, Jeff means an entirely different controller he's now holding.

This is the Nintendo 64 that you have in front of you? Yep. This is the one with the like the three little prongs and you hold on to the two outer prongs. Then there's just the one prongs, the handles, let's say. And yes, awkwardly enough, there are three of them on the Nintendo 64 controller. It shaped kind of like an upside-down trident. Out with the boring block-like devices, this controller, which came out in 1996, looked like a little spaceship.

And positioned on the middle handle is a whitish protrusion, maybe half an inch high. That's where Nintendo was like, they really hit the nail in the head with that. They made video games extremely addicting at that point. The nail on the head? More like the thumb on the stick. This was a new kind of joystick, a thumb stick, made for navigating a video game with the intuitiveness of a joystick, but with much greater ease of movement.

No more stiff wrists, just smooth thumb circles. And then you're like, oh, okay, I can play for 12 hours now. It wasn't just the interface that was changing around this time. The games were, too. As the micro-processing power of video game consoles increased, game worlds were able to go from two dimensions, where the characters really only went up and down or right and left, to three. You might remember from, I don't know, high school algebra or something,

the X-axis left and right, the Y-axis up and down. Well, now we're on a Z-axis moving towards you and away from you. David O'Grady again, our game scholar from UCLA. We had whole genres of games that were starting to emerge in the 1990s that used a kind of first-person point of view. In fact, we kind of know them still as first-person shooters. We're huge in popularizing a way of playing in 3-D space, essentially. Games like GoldenEye-O-O-7,

which allowed a player to weave through conquering, Creep mazes, up ladders, across bridges. These games have a point of view where you are the camera, essentially, and so you don't really see much of an avatar of yourself on screen or of the character you're playing. Other than your gun-toating hand, in this case. It pretty much is you. And you are immersed, going right, left, up, down, and deep in virtual reality.

So, we have the genius of the joystick right at our thumbtips. We have the ability to move through games with visual depth until we hit a wall, literally. Because with just one thumbstick that controls movement, we don't have an easy way to look where we're going first. So now, David says, we need to separate out movement from looking. These are two fundamental things. things that we tend to do in our lives and also in games which tend to simulate things that come from our lived experience. In real life, we don't have to move in a particular direction whenever we look that way. Like, now I'm looking over here, here I come, now I'm looking

over here, here I come. And we can move in one direction while looking in another. Now it's not that you couldn't look and move distinctly, or strafe on the N64 controller, but it was inelegant, involved more buttons, specifically the D-pad or directional pad, the up-down, left-right, cross-shaped one, which just isn't as easy or precise as the thumbstick. And so? The long and short of it is we came up with a two-thumb solution, two analog thumb sticks that sit underneath each of your thumbs. Analog, meaning you are controlling the degree of motion with how hard you press the thumbstick in a particular direction,

and two joysticks to physically separate the looking from the going. The right thumbstick typically is sort of pointing the way to go, and the left thumbstick is actually doing it. It's the movement. Basically, one joystick is your eyes, the other, your legs. The pioneer of this two-thumb solution, Sony PlayStation's dual thumbstick controller, which came out a year after the Nintendo 64 in 1997, with, yes, two thumbsticks symmetrically positioned,

that afforded you the ability to move very precisely and aim very accurately. Like in Medal of Honor, a World War II combat game, created by Steven Spielberg, and inspired by his then-recent film Saving Private Ryan, and, according to a couple of his collaborators, by watching his son play Golden Eye-O-7. It was among the first games to really integrate both thumbsticks into its gameplay. With a second thumbstick, it was easier than ever to make your on-screen avatar do exactly what you wanted it to. as close to mind control as a controller could get. The gaming industry had reached peak interface,

and the proof is in the play. Because while the video game industry has continued to iterate on the design, Xbox moved the thumbsticks diagonally. The tactile experience has become increasingly buttery, as I felt for myself in Jeff Boojack's game room. Oh, these thumbsticks are very joyful, very smooth. The dual stick controller itself hasn't changed all that much, functionally or stylistically, in the nearly 30 years that we've been using it now to navigate 3D space.

What has changed in that time are the spaces we're using it to navigate. If it ain't broke, don't fix it. In fact, just throw it to your troops. Coming up, video game thumbsticks go from game world battlefields to real ones. You know, Within a century, we've gone from using a joystick to navigate three-dimensional airspace to using it to move Pac-Man two-dimensionally, up, down, left, right, on screen, to shrinking it beneath our thumbs, to adding a thumbstick to make maneuvering through a game world feel like moving through the real world. And where we've arrived now, at the modern dual-stick

video game controller is a new period of evolution, not of the interface itself, but in what we're using it for. What makes, in your mind, a video game controller the right tool for operating the kinds of advanced weapons that the military is using it for? It's generally a matter of familiarity. Jared Keller is a long time. military technology journalist. He wrote a piece for Wired Magazine last year called

This Video Game Controller has become the U.S. military's weapon of choice. The controller he's talking about is the Freedom of Movement Control Unit, or FMCU. It's rugged, it's designed to be durable and to endure intense environments, but to the average observer, it would look like anything that comes with a PlayStation or Xbox. Yeah, it's like shaped like a PlayStation or Xbox controller, but it's like tan in color, you know, kind of your stereotypical military color palette. Yes, coyote tan is what they call it.

Coyote tan, okay. Yeah, or sometimes, you know, desert tan, right? Right. But really, I cannot stress enough that if these FMCU controllers weren't desert tan, you really would just think they were for Fortnite or Final Fantasy. They have the two thumbsticks, the D-pad, the all-too-familiar trigger buttons on the tops of the handles, except in this case, they are actual triggers. The military has been experimenting with video game controllers for the last two decades, but their proliferation and use has really accelerated in recent years as their utility has been demonstrated in various field experiments and tests. The Pentagon has confirmed the use of the FMCU controller in the recent years.

the Air Force's Radbo, or recovery of air bases denied by ordinance vehicle, a boxy, desert tan bomb-finding truck. Also in the Army's short-range air defense system, picture heavy-duty vehicles, often unmanned, with turrets and machine guns and missile launchers mounted on top to take out low-flying threats like helicopters and small planes. Every mission is different, the FMCU's product description reads, shouldn't your controller be as versatile as you are? The FMCU isn't the only game controller that's in the action, Jared says. The Army's locust laser weapon system blasts drones out of the sky using an actual Xbox controller. It gives the operator a better sense of control and focus on a system that requires precision to

effective. And the U.S. military isn't the only one using video game controllers. The British Army, the Israel Defense Forces, also the armed forces of Ukraine, who, Jared says, have been using PlayStation controllers to direct armed drones and machine gun turrets at invading Russian forces. So, why? Why video game controllers? One reason, as you heard, is for familiarity. Gen Z and Gen Alpha, who are going to make up the majority of the armed forces in the coming decades, have grown up on these systems. So why waste time building a new one when you can give prospective troops something they're already familiar with and can use almost instantaneously? Another, that precision Jared was talking about, the mobility of the

thumbsticks for directing vehicles and weaponry, and the level of responsiveness that, According to the FMCU's product description, can, quote, be the difference between success and failure. But also, the military doesn't have to reinvent the controller. In fact, Jared says that might be for the best. I think we've all heard the joke that a camel is a horse designed by committee. I have not heard that joke. Yeah, but often, you know, a lot of proprietary systems designed by the

the DoD end up being camels, not necessarily because of, you know, bad design decisions, but because the knowledge and understanding and research exists out there in the private sector. Not only does it already exist, Jared says, it may very well have already been perfected. The gaming companies, as the technologist Peter Singer put it years ago, spent tons of money developing what is optimal, intuitive, and easy to learn. And the military is basically saying, well, they did the job for us. Let's build these systems so that this next generation of war fighters can adapt those skills seamlessly to a military context.

The game companies did the job for them. Now, when it comes to the joystick specifically, This full-circle moment is not all that surprising, right? The joystick is part of the military's aviation history and development. It's not new to them. The joystick has kind of proven itself over the last several decades as the man-machine interface of choice. It's just kept getting better. There is no more intuitive, optimized system for delicate, precise control of remotely operated technology.

than the joystick. Now the word remotely is important here because when we're using joysticks to navigate through game worlds, we know those worlds on our screen aren't real. When a soldier is using a video game controller to shoot down a helicopter on a screen, it is real and deadly.

We've designed something that makes it easier than ever to execute incredibly consequential tasks. Then again, these consequential tasks can also be life-saving. Last year, an endoscopy was performed on a live pig in Hong Kong from thousands of miles away in Switzerland using a PlayStation. And momentum behind game controllers in medicine is building. Earlier this year, the FDA approved the latest iteration of the Monarch

Broncoscopy system, which uses a controller adapted directly from the Xbox to maneuver a tiny tube through a patient's lungs to find and treat diseases. It is uncanny. The Xbox-esque black-and-white design, the two-handle shape, the two thumbsticks in that familiar diagonal orientation. The same optimized interface, from the game room to the war room to the operating room. How do you feel about game controllers being repurposed for things like this?

Well, I'm always happy when the geeks win. Miko Hinen is the creator of the Finnish Museum of Games in Tumpur, Finland, and one half of the team behind its 2023 exhibition, The Joy of Sticks. It featured hundreds of gaming joysticks from Miko's personal collection, but also traced the interface's significance in society, from aviation to medicine. Examples like this show that games have always been and are very much connected. This is the exhibit's other half, Nicholas Newland, one of the museum's curators.

Despite the joy these fins find in sticks, Miko and Nicholas do acknowledge, begrudgingly, that the next big interface is already here. Nowadays, everybody is using the touchscreen for everything. Oh boy, the touchscreen. It is ubiquitous, but just because it's big doesn't mean it's better. In fact, what makes the joystick great as an interface is the same thing that makes the touchscreen basically a black box. This idea of perceived affordance, you look at a joystick, you know how to use it.

It's an intuitive piece of hardware. You look at a touchscreen, and it's a flat piece of glass. Zero perceived affordance completely beholden to its software. And so what the touchscreen affords us is really only what the software developers want us to be able to do with it. And Nicholas isn't particularly happy about it. Touchscreens are scarily monolithic, and they sort of become like, I guess, like a metaphor for the influence of the big tech companies nowadays. Everything is put into the same type of interface. And that same interface is bombarding us with endless possible uses, apps, maps, games, that each have their own way of using the touchscreen that you have to get.

Get used to. From swiping through potential soulmates, oof, not much joy in that, to signing your name with your fingertip. And we all know how well that usually turns out. On a touchscreen, you can do a lot of things, but like being very precise is not one of them. No, it is not, Miko. But convenience, versatility. Those are perhaps the touchscreen's primary affordances. one interface in our pockets all the time that allows us to communicate, shop, split a bill with friends, and crush all the candy.

But touchscreens have also made life literally flatter. Think of how many dials and buttons we've squashed into extinction. On our phones, our cash registers, in our cars. We're losing our grand. grip on the world. One swipe, scroll, and tap at a time. But the joystick... It's very different because you actually use your body when controlling. It offers us a physical human-machine connection, Niklaus says. The tactile, empowering experience of maneuvering an actual object to explore 3D space in a self-controlled way. Whether we're

flying a plane or driving Mario's cart. Poorly, in my case. It's our bodily affordances and machine affordances coming together in joyful, sometimes exhilarating harmony. You kind of become one with the joystick. And I think that's something that stays in people's muscle memory or bodily memory. like we want to be able to be very precise or we want to be able to sort of use our bodies for controlling. And sort of joysticks maybe remind us of this, that there's options. The breadth of different ways is good for us.

You know, I too think maintaining a physical connection to our physical world with a physical interface like the joystick is good for us. Just like it's good to use our own software and hardware. our brains and bodies, and to be able to move those heads and bodies separately. So it's not really about one interface replacing another, or it shouldn't be. It's about having the tool that affords what you need. Versatility, specificity, convenience, precision. It all depends on the game. So, Amory on the right, those orange things make you go faster.

Yes. Oh. It's kind of propelling arrows. You guys were setting me up for failure. We've been competing. Hooray! Ludwig. 12th.

12th of 12. I love that story. But I have one bone to pick with Amory Severson. because I'm here to tell you that the Atari 2,600 joystick is a beautiful piece of design, that you're like weak-risted millennials get tired using it. Yeah. That is your problem. That is not an Atari 2600's problem.

To say nothing of the rich mahogany veneer on the outside of this thing, it really is a beautiful piece of machinery. The machine is gorgeous. You could throw it down three flights of stairs. You could fry an egg on it, and it'll still play. That thing is a gorgeous piece of the pinnacle of design. And so, like, when she goes to that, she's like, I don't like it. Like, what the hell is going on there? But anyway, I'll let her have her say.

She is a great reporter. So, Roman, your letters and everybody else's letters about Amory's thoughts on the Atari 2,600. I'll happily bring them directly to her. Forward to her, because I will not have any of this Atari slander in my house. But of course, Amory talked about some much more serious. stuff that we're going to pick up in our next episode, and that is military applications for video game technology. For episode three of Hidden Levels, we're going to tell you how the U.S. military uses video games to recruit. So, you're probably wondering to yourself,

the U.S. Army has an e-sports program? Why? And how do I join? The U.S. Army ESports program is a recruiting outreach tool to help the Army connect with the fast-growing e-sports audience. That is the next time on hidden levels from 99% invisible and endless thread. This episode was produced by Amory Sievertson. It was edited by Meg Kramer. Mix and sound design by Emily Jenkowski. Additional mixing by Martine Gonzalez, music composition by Paul Vikas,

series theme by Swan Rayal and Paul Vikas. Fact-checking by Laura Bullens. Special thanks to Amory's Mario Kart opponents, Philip Sousy, Kelly O'Connell, and Mike Mosquito, and to Henry Lowood for sharing his expertise and tipping Amory off to The Joy of Sticks Exhibition. 99% Invisible as executive producer is Kathy Too. Kurt Kolstad is our digital director, Delaney Hall is our senior editor.

The rest of the team includes Jason DeLeon, Emmett Fitzgerald, Christopher Johnson, Vivian Lay, Lashamadon, Jacob Medina Gleason, Kelly Prime, Joe Rosenberg, and me, Roman Mars. The 99% Visible logo was created by Stefan Lawrence. The art for this series was created by Aaron Nestor. We are part of the Series XM podcast family, now headquartered six blocks north, in the Pandora building in beautiful, uptown, Oakland, California. Endless Thread is a production of WBUR, Boston's NPR. The rest of our team tackling unsolved mysteries, untold histories, and other wild stories from the internet includes managing producer Sumit to Joshi, production manager, Paul Bikis, producers Dean Russell, Grace Tatter, and Franny Monaghan.

We'll see you for a new episode of Hidden Levels on Tuesday.