Solar2D Game Engine main repository (ex Corona SDK)
The flexible game engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open Source real-time strategy game engine for early Westwood games
A development environment focused on modding
Injectable LUA scripting system, SDK generator, live property editor
Godot is a powerful cross-platform game engine
Cross-Platform C++ 2D/3D game engine
Flax Engine, multi-platform 3D game engine
Simple Beat Saber Mod Installer
Multi Theft Auto is a game engine
Sandbox video game with a powerful physics engine
Diablo build for modern operating systems
A Minecraft mod designed to improve frame rates
Open source voxel game engine with support for survival and crafting
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Lutris desktop client in Python
Java/JavaFX/Kotlin Game Library (Engine)
Real Time Strategy game engine supporting early Westwood classics
Open game and rendering engine packed into a JavaScript framework
An iOS & tvOS Frontend for Multiple Emulators
The game engine for everyone
A retro game engine for Python
Powerful, mature open-source cross-platform game engine for Python
Free, open source game engine online