Godot is a powerful cross-platform game engine
Injectable LUA scripting system, SDK generator, live property editor
Xash3D FWGS engine
The Ren'Py Visual Novel Engine
Open source voxel game engine with support for survival and crafting
Multi Theft Auto is a game engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
Real Time Strategy game engine supporting early Westwood classics
Solar2D Game Engine main repository (ex Corona SDK)
The game engine for everyone
Open-source engine for Heroes of Might and Magic III
A game engine powered by python and panda3d
fheroes2 is a recreation of Heroes of Might and Magic II game engine
A complete 3-D game development suite written in Java
Voxel game-creation platform with easy modding and game creation
Magic Another Game Engine
Open source clone of the Age of Empires II engine
3D game engine/framework in C, with Luajit and Python bindings now
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
A modular Common Lisp game engine
Recreation of the classic Grand Theft Auto III game executable
A retro game engine for Python
Cocos simplifies game creation and distribution with Cocos Creator
dhewm 3 main repository
Powerful, mature open-source cross-platform game engine for Python