An open source re-implementation of RollerCoaster Tycoon 2
Multi Theft Auto is a game engine
Voxel game engine in C++ with OpenGL
Voxel game-creation platform with easy modding and game creation
A sandbox game about giving your mannequin a wedgie.
TX Library is a tiny graphics library for Win32 written in C++.
Attention! This tiny board/shooter game just created for fun
Simple 3d Top-Down Shooter & Free 3d Board Game
Parabator 3 - Rush of the Wind 1.4.3 (Xtreme3D Engine) Free board game
An unmodified version of the MMORPG Impressive Title by KovuLKD
Open RealStrategyGameLibrary (Engine)
A real-time game development platform
A 3D vehicle physics programming project created by Mikko Oksalahti.
sandbox particle simulator that obeys schrödinger's equation
LAIR is a Sandbox Dungeon Crawling Game
3D Interactive sandbox environment
3D world editor for game development
Another OpenGL Game Framework for Windows
NinYawg Adventure
A highly modifiable particle-simulation sandbox game
Erosion simulation game
2D Sidescrolling Sandbox Game