A game engine powered by python and panda3d
Ct.js is a desktop game engine that makes learning programming fun
Open game and rendering engine packed into a JavaScript framework
Free game engine for development of desktop, mobile, and web games
3D Game engine with editor
Stride (formerly Xenko), a free and open-source cross-platform C# game
An OpenGL RTS game engine written in C
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Free, open source game engine online
The Tiny JavaScript Game Engine That Can!
The flexible game engine
Descent 3 by Outrage Entertainment
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Vivid3D is a C++ IDE/3D engine, with python scripting.
PyCAPGE - Python Classic Adventure Point and Click Game Engine
A cross-platform, open-source, pure C game engine for mobile game
3D C++ Game Engine - yet another open source game engine
A 2D game engine and level editor
KlayGE is a cross-platform open source game engine
Web powered cross-platform 3D, WebXR game engine
Multi-platform game engine similar to old Megaman with a stage editor
A roguelike game engine/editor
3D Game engine