Open source library for creative expression on the web, desktop, etc.
utility collection for 2D game development in Java; sound-player
API (C#) for simulating certain aspects of a ZX spectrum for porting.
Game framework with AI
Cross-platform 3D scene editor based on three.js, golang and mongodb
A cross platform Lua based game engine
Low-Level Game Engine for Retro Platforms
Cross-platform 2D game engine