Cocos simplifies game creation and distribution with Cocos Creator
Godot is a powerful cross-platform game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Multi-platform 2D and 3D game engine
Xash3D FWGS engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
GemRB is a portable open-source implementation of the Infinity Engine
An iOS & tvOS Frontend for Multiple Emulators
3D Engine c++
The game engine for everyone
New Godot bindings for Swift
A dead simple 2D game engine for Go
Cross-platform game engine in Rust
Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
Real-time physically based rendering engine for Android, iOS, and more
The open-asset-importer-library repository
Open source library for creative expression on the web, desktop, etc.
Free, cross-platform 2D game engine powered by Haxe and OpenFL
A multi-platform support c++11 library with focus on asio
Play! - PlayStation2 Emulator
Open source Cardboard SDK and samples
A showcase app for the Flutter SDK
Orx: Data-Driven Game Engine