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
Godot is a powerful cross-platform game engine
Multi Theft Auto is a game engine
Injectable LUA scripting system, SDK generator, live property editor
Open source voxel game engine with support for survival and crafting
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Real Time Strategy game engine supporting early Westwood classics
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
Cross-Platform C++ 2D/3D game engine
A Flutter based game engine
Magic Another Game Engine
Open source clone of the Age of Empires II engine
A game framework written with osu! in mind.
LayaAir is an open-source 2D/3D engine
RPG Maker 2000/2003 and EasyRPG games interpreter
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
A fresh & lightweight javascript game engine
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D