High performance UI layout library in C
A game engine powered by python and panda3d
JavaScript-based game engine designed to empower developers
Orx: Portable Game Engine
GemRB is a portable open-source implementation of the Infinity Engine
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Game engine supporting many 3D/2D formats and graphic effects
The multiplayer game engine
State Management and Multiplayer Networking for Turn-Based Games
A cross platform Lua based game engine
Portable game engine with main focus on point-and-click adventures
A generic 2D engine for any kind of game
Free Android 2D OpenGL Game Engine
Free MMORPG Engine. Develop and host graphical browser-based games.