Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
Real Time Strategy game engine supporting early Westwood classics
fheroes2 is a recreation of Heroes of Might and Magic II game engine
The game engine for everyone
Open Source real-time strategy game engine for early Westwood games
Ct.js is a desktop game engine that makes learning programming fun
Open-source engine for Heroes of Might and Magic III
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Urho3D Game engine
New Godot bindings for Swift
Retro game engine for creating games like it's 1997
Opensource crossplatform Fallout 2 game engine writen in C++ and SDL
A modern, cross-platform Quake game engine based on FitzQuake.
Cross-platform 3D scene editor based on three.js, golang and mongodb
Improved version of the X-Ray Engine, the game engine
Low-Level Game Engine for Retro Platforms
A project to create a blazingly fast Swift game engine
A 2d physics game engine for JavaFX
Flexible and easy-to-use 2d game engine
An online multiplayer turn based strategy game and board game engine.
Java decentralized cross-platform network multiplayer game engine
C++ OpenSource Game Fabric based on SDL2
A multiplatform game engine for interactive fiction experiences