Learn PICO8-LUA with Real Code Examples
Updated Nov 21, 2025
Explain
PICO-8 Lua allows developers to write games and interactive demos using a simplified Lua dialect within a constrained virtual console.
It provides built-in APIs for graphics, sprites, sound, input, and persistent memory, simulating an 8-bit console environment.
Commonly used for game jams, retro-style games, educational projects, and creative experiments.
Core Features
Graphics API: sprites, rectangles, lines, text, and colors
Sound and music synthesis tools
Input handling for keyboard and gamepad
Persistent memory via `cartdata`
Constrained 128Γ128 resolution, 16-color palette
Basic Concepts Overview
Lua syntax and data types (numbers, strings, tables)
Drawing graphics with `spr`, `rect`, `line`, `print`
Playing sounds and music via `sfx` and `music`
Game loops using `_update()` and `_draw()` functions
Handling input with `btn()` and `btnp()`
Project Structure
code/ - Lua scripts
sprites/ - sprite sheets and tiles
map/ - tile map for game levels
sfx/ - sound effects
music/ - background music tracks
Building Workflow
Open built-in code editor
Write Lua code using PICO-8 API
Use sprite, map, and sound editors to design assets
Run and test cartridge in simulator
Save as `.p8` or `.p8.png` for sharing/export
Difficulty Use Cases
Beginner: simple sprite movement and collision
Intermediate: platformer or puzzle game
Advanced: full-featured 2D game with multiple levels
Expert: optimized memory usage and procedural content
Community: participate in jams or collaborative projects
Comparisons
Simpler than full Lua + game engines
Sandboxed like TIC-80 but with smaller footprint
Retro aesthetic vs modern engines like Unity
Limited but all-in-one development console
Ideal for game jams and small creative projects
Versioning Timeline
2014 β PICO-8 released by Lexaloffle Games
2015β2017 β Community growth and jam integration
2018β2020 β Enhanced export options and web support
2021β2023 β Expanded tutorials and creative community
2025 β Mature platform for educational and creative retro games
Glossary
Cartridge: single PICO-8 game file (.p8 or .p8.png)
Sprites: graphical tiles for characters and objects
Map: tile-based game level layout
SFX: sound effect object
Music: song object composed of SFX patterns