The flexible game engine
A completely free, open-source, 2D game engine
Go bindings for raylib, a simple and easy-to-use library
The ioquake3 community effort to continue supporting/developing id's
SDL based generic 2D game engine
Orx: Portable Game Engine
A cross-platform, open-source, pure C game engine for mobile game
Retro game engine for creating games like it's 1997
Cross-platform 2D and 3D game engine
Game engine for playing tomb raider 1 - 5 levels.
creator : Nikola Lukic about : Visual JS 2d canvas multiplatform game
A basic 3D environment with a first-person POV
A Simple Game Engine
3D game engine for C and C++
Tactical, turn-based game engine, that uses OpenGL and WinAPI
A complete 2D Game Engine with built in drag and drop editor
Reference implementation for the Doom game engine.