A game engine powered by python and panda3d
A 2D rigid body physics engine for the web
A game engine with an emphasis on real-time cutting-edge solutions
2D JavaScript Physics Engine
A modern, cross-platform Quake game engine based on FitzQuake.
GemRB is a portable open-source implementation of the Infinity Engine
Full featured MUD server with all the trimmings.
SDL based generic 2D game engine
Orx: Portable Game Engine
The multiplayer game engine
A game engine for console based text games
State Management and Multiplayer Networking for Turn-Based Games
A Tile-based Game Engine written in C# mimicing retro consoles.
A cross platform Lua based game engine
Web powered cross-platform 3D, WebXR game engine
Portable game engine with main focus on point-and-click adventures
Multi-platform game engine similar to old Megaman with a stage editor
A 3D game engine in java.