Open game and rendering engine packed into a JavaScript framework
Powerful, mature open-source cross-platform game engine for Python
A charting and data visualization library for Unity
Flax Engine, multi-platform 3D game engine
3D Procedural Game Engine Using OpenGL
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Doom-based AI research platform for reinforcement learning
Cross-platform, open source, and super fast MUD client with scripting
FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
Open and edit the archive files used in over 4200 games.
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
A GNU/Linux operating system accessible for visually impaired.
X3D is the open-standard format for 3D graphics scenes on the Web.
A free 3D game engine to create games and realtimes scenes for Windows
A real-time 3D Engine written in Ada
Cross-platform real-time strategy game (3D)
Kubok16 is a math puzzle similar to Sudoku.
3D OpenGL dungeon game using Ada: a tribute to Narbacular Drop
Maintain logs of model rocket flights and your rocket fleet inventory
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
3D slider puzzles for kids; helps teach solid geometry
Soccer-themed 3D Sokoban Game