RPG Maker 2000/2003 and EasyRPG games interpreter
HTML5 Phigros chart player/simulator
JavaScript player library / DASH & HLS client / MSE-EME player
A Flash Player emulator written in Rust
Aim assistance for blocks and mobs
A dependable HTML media framework
Open source HTML5 video player
The source code to VVVVVV
Open-source rhythm game
One of the best Prodigy hacks
Retro Bowl is an American football game in retro style
Access GameLift resources and integrate GameLift into your Unity game
The Oldschool Runescape API wrapper that does more
An open source re-implementation of RollerCoaster Tycoon 2
Archipelago Multi-Game Randomizer and Server
Experimental menu for GTA 5: Enhanced
Flash + AIR sound effects generator. Based on Sfxr.
Open source library for creative expression on the web, desktop, etc.
Voxel game-creation platform with easy modding and game creation
Navigable waveform built on Web Audio and Canvas
Multi Theft Auto is a game engine
The modern, next-generation Minecraft server proxy
You can make it - Open Source MMORPG Platform
A Hypixel skyblock stats website
Build multiplayer web games played by millions