In two separate projects I've used fetch() to grab a secondary map file, and then used mset/mget to get/set tiles on that file and the default 0.map file, which has caused the graphics and map data to corrupt permanently in some way.
1. Short Circuit
I used Picotron to make a game for the GMTK Game Jam called Short Circuit. In it, I draw walls in the map editor with a basic sprite and then use a function during runtime to replace these sprites with ones that are shifted upward to look 3D:
Multiple times during this jam I would suddenly get an "Out of Memory" error when trying to run my cart even though it was fine for the past couple hours. I would reset Picotron, and suddenly all my sprite data for the cart would be empty (even if I opened it externally), and my map files would be empty and broken. Upon trying to launch the game I would get this error:
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<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<title>MunchRex — Playable HTML</title>
<style>
html,body{height:100%;margin:0;background:#0b1220;display:flex;align-items:center;justify-content:center}
canvas{image-rendering:pixelated;border:8px solid #081018; background:#7ec850}
ui{position:fixed;left:10px;top:10px;color:#cfe;border-radius:6px;padding:6px;font-family:monospace}
a{color:#9ff}
</style>
</head>
<body>
<canvas id="game" width="128" height="96"></canvas>
<div id="ui">MunchRex — Save as HTML & open. Controls: ← → | Z jump | X gulp | C tail/stomp<br/>Press Enter to Start</div>
<script>
/*
MunchRex — compact browser export
- 128x96 logical resolution (scaled by browser)
- Player: little T-rex (16x12 pixel sprite drawn from arrays)
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An endless runner taking place on a highway. Use the arrow keys to control him
Im gonna add some more progression later (unlockable hats and stuff)
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Experimenting with boids and different optimizations/simplifications to be more efficient. I'm sure some coding wizard could figure out how to use userdata() for group pathing, but I'm not there yet. Assets are just a swap of an earlier project.
This screensaver doesn't work when Battery Saver is enabled.
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-- Spotlight Lander Demo --
----- Arcade, Space, Classic -----
--------- Pico-8 game [0002] ---------
controls:
Up/Left/Right - Thrust
X - Restart
The Goal:
**Successfully land the lunar lander module by searching for the landing pad and adjusting your thrust to have a successful touchdown!
I created the game loop of this game by following a PDF tutorial resource created by Dylan Bennett and posted on his itch.io
Dylan Bennett - Gamedev_with_PICO-8_1
description
This game took slightly longer to develop than my first Pico-8 game due to unavoidable personal reasons, however, I'm super excited to finally get it out!
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THIS IS NOT A GAME!
This is for anyone to base their games on for a quick and easy collision and movement system.
This is a very easy 2d movement and collision engine for PICO-8.
All you need to include collision and movement in a scene is to just write 'engine()' in the update section.
It comes with a sample scene to see how it works.
Features listed here:
- 2d Top-Down Movement
- Collision system
- Camera options to suit your game (static, follow player, smart camera)
- Map Border options
- Easily print text to the center of the screen (when static) or the center of the camera (when following player)
How to implement:
- Copy this file into PICO-8 and edit it
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This is a tower defense game to liven up a festival!
Supports both mouse and button controls.
Mouse Controls
- Click – Place a shop
- Mouse Wheel – Select a shop
Button Controls
- Arrow Keys – Move cursor
- Z / C – Place a shop
- X / V (Hold + Up/Down) – Change shop selection
The range of aroma differs depending on the shop.
Preferences also vary by age (child/adult) and gender (male/female).
|
[8x8] |
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I just had to make this!
This is my version of a Galton Board. This toy demonstrates the Central Limit Theorem (CLT). As I understand it, the CLT is simply the tendency for a series of random events to converge into a bell curve! It is a useful concept in statistics that is borrowed from probability. It is also relevant in AI and machine learning, where bell curves can be used to model deviations (from an average), error, or noise
Controls are listed in the cartridge
If you are interested in the math side of things, there are basically three layers:
- Every time a particle hits one of the fixtures, a coin flip occurs, sending the particle left or right randomly. This happens up to 9 times, depending on where the particle started
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We got some rain in my town today and I was looking at it while having a smoke.
Got inspired to make this small demo of falling rain and ripples.
I tackled this using an object oriented approach with Lua metatables.
Hope this helps anyone that wants to get started with OO in pico8 or anyone looking to add some rain to their game.
Feedback is always appreciated and I'm happy to answer any questions.
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Less successful than that Asteroids GPT creation, but the bones of a game ARE here. Still pretty incredible.
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ChangeLog
1.0.1 Adds:
More News
New Game Added!
1.0.1-hotfix Adds:
Adds Ability to Launch
Bernie And the Wax Museum
I'll Add your game if You request it.
There will be more news in later versions
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As an experiment, I wanted to see if GPT-5 could code a Pico-8 game and I'm honestly pretty terrified. This was generated in a single shot with the prompt "Write a Pico-8 version of Asteroids." The only bug fixing I did was to clean up the header, change the update rate from 60 to 30, and reverse the direction of rotation of the ship.
We are so cooked.
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Bernie Cinders is a young fireball who enjoys toasting marshmallows, playing in dry leaves, and visiting the wax museum.
Controls: L/R, Z to jump -- UP to enter a door.
Made this past weekend for PICOJAM at Pico Pico Cafe (thanks for hosting CJ!). My theme was "melting". Unfortunately I forgot to submit to itch before the deadline, but here are the other entries: https://itch.io/jam/picojam-2025/entries
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Press (Z) to select difficulty
Press and hold (X) to generate a puzzle
use arrows to navigate, and press (Z) to input a number (1-9)
UPDATE 2025/08/12:
Toggle "note mode" ON/OFF in the pause menu. Hold (Z) and a direction on the keypad to input a blue dot inside the cell, so you can note down possible numbers!
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🍧 make shaved ice for animals at the festival! 🍧
- place bowl under shaved ice maker
- insert ice into shaved ice maker
- pick up shaved ice
- add ✨SYRUP✨
- deliver to animals!
use arrow keys to move, z to interact & x to discard shaved ice.
(there's no ending! you just make shaved ice forever.)
Credits
- code by @davemakes
- art by @npckc
- music by @mabbees
Made in 2 days for PICOJAM 2025.
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