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apLundell

I'm a virtual reality and game programmer, who's excited about games, technology, and retro games.

Twitter : @apLundell
Mastodon : octodon.social/ @apLundell
World Wide Web : AndyLundell.com


Recently I've been thinking about those old Gameboy color cartridges that had built-in rumble-packs.

I wanted a rumble-pack for Pico-8, and, by a happy coincidence, I had a bunch of tiny rumble-motors left over from when I was prototyping VR accessories for a former job!

So here's my first draft of PICO-8 Rumble :

Here's a video of it in action. Obviously you can't feel the rumble through a video, but I put a microphone right up against the rumbler. Actually, I think I put it too close, this video is LOUD.

https://photos.app.goo.gl/jnz5LUBMB16Ds9576

Here's how I did it.

Step Zero : If you've got a pocketCHIP, and especially if you intend to fool around with the GPIO pins, I strongly recommend putting insulating tape over the 5V and BAT pins. If you accidentally connect one of these pins to any of the other pins you could instantly fry your CHIP! They even stay active when the device is off!

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I've been experimenting with the GPIO pins on PocketCHIP in a Pico-8 game, but it's awkward that it only works for the root user.

Is there some way I could change the permissions of the hardware so that ordinary users can access the GPIO?

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Cart #retro_brothers-0 | 2019-08-24 | Code ▽ | Embed ▽ | No License
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Oh no! There are vermin in the pipes!
The only solution is to send in the world's best adventurer-plumber : Mar Jelpi!

Play as Jelpi and his siblings as he goes down into the sewers to clear out all the creatures living in the slimy darkness of the sewer pipes!

This one is obviously based on an old classic.

Before the NES, Nintendo games were ported to every platform you can imagine, both officially and unofficially. (This was the Mario of my youth) So I figured I'd have a go at bringing my interpretation of this old favorite to Pico-8.

[box=ffffdd]

  • This game supports up to four players. Just use the directional buttons to choose your character and X to lock in your choice.

  • Once in game use left and right to move, and either button to jump.

  • Stun enemies by bumping them from underneath, and then kill them by jumping on them while they're stunned.

  • The "ZAP" button will stun every creature currently touching the ground. But be careful! Zap can only be used three times before it's empty and has to regenerate.

  • Extra Life at 5,000pts, 10,000pts, and every 10,000pts thereafter.

[ Continue Reading.. ]

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Cart #space_hangman-3 | 2019-08-22 | Code ▽ | Embed ▽ | No License
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Space Hangman!

Use your spaceship to pop the bubbles with letters in them to spell the mystery word.

Pop the wrong bubbles and you lose health.

Green bubbles are wildcards and will always fill in a letter.

Red bubbles are hearts and will increase your health.

Controls :

  • LEFT and RIGHT to steer your ship
  • UP or O to accelerate ("z" on keyboard)
  • DOWN to brake
  • X to spin 180 quickly

This is a quick little idea I've had for a while. I think it worked out pretty good, so I'm posting it, even though it's not very elaborate.

Strategy-wise, I recommend going for vowels first, but don't kill yourself trying to get a particular letter, it'll come around again.

Please let me know about any typos or spelling errors in the word list!

Old Versions :


Cart #space_hangman-1 | 2019-08-07 | Code ▽ | Embed ▽ | No License
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Cart #space_hangman-2 | 2019-08-08 | Code ▽ | Embed ▽ | No License
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I love seeing work-in-progress screenshots.

The great thing about keeping these screenshots is that after the game is finished, you can tell in retrospect which screenshots were significant and interesting.

Pico-8 encourages screenshotting, with its built-in screenshot and gif capability. And the file size is minimal. ... So I figure a lot of folk probably have cool early screenshots of games that later become great games.

So let's see 'em!

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I notice the Pico-8 font has some semi-graphical characters, but not quiite enough to make a real retro text-mode UI out of.

I'd love to see some of the old DOS box-drawing characters added to the pico font if there's space for a few more glyphs.

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Cart #space_tavern_1_4-0 | 2025-03-16 | Code ▽ | Embed ▽ | No License
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(Updated March 2025)

[box=ccffcc]You are Pat Blastrock, down on your luck space hero. After a particularly ill-fated adventure, you stumble into Space Tavern Station with only 500 credits to your name and a busted up escape pod. (It was a very ill-fated adventure.)
Luckily, if there's one thing Space Tavern Station has an endless supply of, besides surprisingly vile synth-ale, it's suckers. You're going take the only option you have left and gamble your way back to fame and fortune.

The poker played here at Space Tavern Station is not a fancy tournament. Here, they play tavern-style. You can leave the table at any time, but you can't go "all in". If you get raised out, you have to fold, so make sure you bring enough cash to play a grownup's game.

Some of your opponents might be desperate enough to bet the keys to their ship. Don't feel any remorse in taking that bet. It's not your problem how they're going to get home.

If you're light on cash, you can go to your inventory and sell something.

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The mobile player on the forum is pretty nice, but it's missing one important feature : It doesn't disable the long-press context menu.

If you hold the d-pad or a button down (as you do) it pops up a context menu, making the games frustrating.

Until this is fixed, I recommend using this bookmarklet to fix it.

javascript:(function()%7Bwindow.oncontextmenu%20%3D%20function(event)%20%7Bevent.preventDefault()%3Bevent.stopPropagation()%3Breturn%20false%3B%7D%7D)()

The forum strips out JavaScript links, so I can't link to the bookmarket, but make a new bookmark, and copy/paste that code into the URL field. Tapping on it will disable the context menu, making Pico8 a joy to play on mobile firefox.

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I certainly don't mean to complain about free games, but maybe a gentle reminder that Pico-8 games are not just played on desktop.

Using the player 2 controls as "extra buttons" makes it very difficult to play on mobile or on PocketCHIP, or even just with controllers. The problem is compounded when you refer to the buttons by however they're bound on your system instead of their 'official' pico-8 names.

Again, I know these are just hobby games, and I haven't paid a dime for them, so I have absolutely no right to complain, but I hope people realize that they're cutting out some potential players when they tell people to press "D" or "Left Shift" or something like that

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Cart #40083 | 2017-04-30 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA
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I decided that the first game I should make for this system would be an homage to the earliest game I have strong memories of playing : “Moon Mine“. Published in 1983, “Moon Mine” was available only on the TI-99/4a, Which means that nobody has ever heard of it. I had it though, and it was a blast. For years this was my favorite game.
So here’s my remake. Made from memory and by closely examining the old game manual I found in the basement.

The original classic was made by Rob F Hendren and John Phillips and I’ve always felt it didn’t get enough nostalgia love.

The instructions are in the system menu. Basically use the arrow keys to move the lasers. O to fire. X to beam down a crew-member to retrieve minerals and water samples.

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