Open game and rendering engine packed into a JavaScript framework
Free and open source real-time strategy game
Java/JavaFX/Kotlin Game Library (Engine)
A Minecraft mapping tool that creates 3D models of your Minecraft
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
FlightGear Flight Simulator: free open-source multiplatform flight sim
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Cross-breeding a 3D FPS with a fantasy RPG in the world of Hexen
A java 3d simple virtual celestial globe. Source code available
Heros of Jin Yong 3D Remastered
3D puzzle game based on Kula World and Cubosphere
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
Cemetery Shooter a first-person shooter. Working in the grave
a webgl Cesium 3D flight simulator
an osm openstreetmap 3D / bing maps car / flight / ballon sim game
A 2D game engine and level editor
Opensource Game Studio
Karel - 3D language interpreter
GameWhizzards is a user created, Open Source 3D MMORPG
Magic cube visualisation and play