Magic Another Game Engine
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
Solar2D Game Engine main repository (ex Corona SDK)
Open Source real-time strategy game engine for early Westwood games
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Svelto ECS C# Entity Component System
Animation Compression Library
A game framework written with osu! in mind.
Embeddable unity game engine view for Flutter
Opensource crossplatform Fallout 2 game engine writen in C++ and SDL
Javascript library for making tile based games
Game engine for playing tomb raider 1 - 5 levels.
A space race game in the style of A Dark Room
Multi-platform game engine similar to old Megaman with a stage editor
Paintown is a 2d fighting game engine.
Visual Novel engine, editor and game development.
OSGET is the first open source mobile game engine template.