Urho3D Game engine
Updated emulator of Forgotten Realms: Unlimited Adventures
A cross-platform, open-source, pure C game engine for mobile game
Engo is an open-source 2D game engine written in Go
Source port of Doom, Heretic, Hexen and Strife developed in Delphi
KotCity, an open source city simulator
A tool for creating voxels for the DelphiDoom Engine
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
DirectX 1-11 to OpenGL wrapper
This is a hacking style game set in the early '80s
Science Fiction, heavy assault, disestablishment of power.
2D physics engine for games