Open source. Open possibilities.

Open-source resurrection of Legends of Future Past, a 1992 commercial text-based MUD, rebuilt from authentic game scripts and documentation using agentic AI; MIT-licensed with a playable server and self-hosting instructions.

A neon vector arcade rewrite of Asteroids designed as a collaborative, evolving game where developers contribute new mechanics and hazards via pull requests.

GDevelop is an open-source, cross-platform, no-code game development software for creating 2D, 3D and multiplayer games for mobile, desktop and the web using an event-based system and modular behaviors.

osu! (lazer) is the open-source, cross-platform rhythm game client from ppy. It is free to play, actively developed, and lets users create custom rulesets. Releases cover Windows, macOS, Linux, iOS and Android; code is MIT-licensed.

A Java-based desktop implementation of Scoundrel, a single-player roguelike card game featuring a test-driven headless rules engine and hand-drawn pixel art.

A cross-platform terminal game collection built with Rust and Lua, offering 18 classic games such as Tetris, Minesweeper, Snake and Solitaire, with English and Simplified Chinese support, i18n JSON language files and package-manager installs.

OpenRA is a free/libre real-time strategy game engine for early Westwood classics like Command & Conquer: Red Alert, Tiberian Dawn and Dune 2000. It is written in C# with SDL/OpenGL, runs on Windows, Linux, BSD and macOS, and offers mapping, modding and dedicated server tools.

openage is a volunteer project building a free engine clone of the Genie Engine used by Age of Empires and AoE II. It uses original assets (not shipped), and gameplay is currently non-functional while the simulation is reimplemented. C++20, Python, Qt6, OpenGL, nyan modding format.

AurexTranslator is a cross-platform, real-time screen translator for Windows and Linux (X11/XWayland). It translates text captured by OCR, from the clipboard, or hooked directly out of a game process through injectable engine-specific plugins.

Croupier is a general-purpose GM backend system for game operations, supporting integrated management of multiple games and environments. It utilizes a TCP session model for Agent-Server and SDK-Agent communication and defines business scopes via gameId and env.

Nakama is an open-source game backend server from Heroic Labs. It provides users, storage, social graph, chat, realtime and turn-based multiplayer, leaderboards, tournaments, parties, purchase validation, notifications and runtime code.

Goat It Web Game is a Nuxt 4 and Vue 3 web game, part of the Goat It app ecosystem, with a live demo, Docker support, and comprehensive testing via Vitest, Playwright, and Cucumber.

PixiJS is a high-performance 2D WebGL and WebGPU renderer for the web, designed for creating interactive graphics and cross-platform applications.

Tiled is a general-purpose tile map editor for tile-based games such as RPGs, platformers and Breakout clones. It supports maps of any size, arbitrary tile and layer counts, custom properties, and the readable TMX map format with multiple tilesets.

Kingslayer is an open-source text-based adventure game and Rust library. Play it online or locally, define custom worlds with RON files, and embed the game loop in Rust programs.

Flame is a Flutter-based open-source 2D game engine. It supplies a game loop, component/object system, effects and particles, collision detection, input handling, sprites and animations, plus optional bridge packages for audio, physics, tiled maps, gamepads and more.

Band BoomBox is a free, open-source 2D rhythm game built with Unity, focused on controller-friendly cooperative multiplayer. It offers over ten songs with multiple difficulties, local play for up to six players, experimental LAN multiplayer, and a built-in editor for custom songs.

Room Crawler is a roguelike RPG with turn-based combat, featuring randomized exploration, skill progression, and replayable runs. Playable in browser or downloadable for Windows, Mac, Linux.

A from-scratch TypeScript browser homage to Scorched Earth (1991): per-pixel destructible terrain, seeded wind, 16 weapons, a tank garage, 2–4 player hot-seat matches, and deterministic-lockstep online play over Supabase rooms.

A Docker container for running a Project Zomboid dedicated server, with automatic workshop mod downloads for non-Steam servers.