Open game and rendering engine packed into a JavaScript framework
One framework for creating powerful cross-platform games
DeSmuME is a Nintendo DS emulator
Java/JavaFX/Kotlin Game Library (Engine)
Cross-Platform C++ 2D/3D game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Doom-based AI research platform for reinforcement learning
Powerful, mature open-source cross-platform game engine for Python
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
Air traffic control tower and radar simulator (solo + multi-player)
3D modeler, 3D game maker, 3D demo maker
Game engine supporting many 3D/2D formats and graphic effects
X3D is the open-standard format for 3D graphics scenes on the Web.
LDraw™ editor for LEGO® style digital building instructions.
A real-time 3D Engine written in Ada