2D Game Engine
Modern 3D engine and IDE written using C# and C++.
2D Game Engine with Lua Scripting made on top of SFML
A tool for creating voxels for the DelphiDoom Engine
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
A scriptable 2d randomizable maze game
A lightweight, fast and extensible game server for Minecraft
Web powered cross-platform 3D, WebXR game engine
3D-Accelerated open-source DOOM engine
scriptable game engine with built-in support for 2D graphics and sound
The Atomic Game Engine is a multi-platform 2D and 3D engine
The ultimate 2D side scrolling engine. NOTE: Moved to GitHUB
IRB is a game creation toolkit
GGMud is a cross platform modern MUD client.
Single-player space fighter simulation game
Open Game Bootstrap