Engo is an open-source 2D game engine written in Go
KotCity, an open source city simulator
A cross-platform 2D game engine
Children's learning programming language Karel the Robot in 3D
A first person multiplayer shooter example project in Unity
It animates some Lissajous figures. It is Boot-able.
Realtime 3D engine for game development
Bot for id Software's Wolfenstein 3D
The Atomic Game Engine is a multi-platform 2D and 3D engine
online 4X browser game engine
3D .NET engine for Windows, Linux, Mac
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
plugin-based RPG manager in C++ and Qt5
Open Game Bootstrap
This is a hacking style game set in the early '80s
Science Fiction, heavy assault, disestablishment of power.
2D physics engine for games
Source code for the Krabat adventure
cross-platform 2d game engine
Complete ROV Control Suite
PHP Games Script includes more than 3600 flash games
Cross-platform 2D game engine
Space Exploration Game