Solar2D Game Engine main repository (ex Corona SDK)
The flexible game engine
Open Source real-time strategy game engine for early Westwood games
Fast and lightweight JavaScript game engine built on WebGL and glTF
Injectable LUA scripting system, SDK generator, live property editor
A development environment focused on modding
Godot is a powerful cross-platform game engine
Play Fighting Fantasy fan stories on this simple 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
A Minecraft mod designed to improve frame rates
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Open source voxel game engine with support for survival and crafting
Java/JavaFX/Kotlin Game Library (Engine)
Lutris desktop client in Python
Open game and rendering engine packed into a JavaScript framework
Free, open source game engine online
The game engine for everyone
Real Time Strategy game engine supporting early Westwood classics
Powerful, mature open-source cross-platform game engine for Python
Skript is a Bukkit plugin which allows server admins
A retro game engine for Python