Godot is a powerful cross-platform game engine
An open-source sandbox tower defense game
Desktop/Android/HTML5/iOS Java game development framework
A simple and easy-to-use library to enjoy videogames programming
UCI chess engine
One framework for creating powerful cross-platform games
RetroArch is a frontend for emulators, game engines and media players.
Open source HTML5 game framework that offers WebGL and Canvas
Fast and lightweight JavaScript game engine built on WebGL and glTF
An iOS & tvOS Frontend for Multiple Emulators
Home theater software and entertainment hub for digital media
The source code to VVVVVV
The game engine for everyone
An open source reimplementation of the Among Us Server
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A dead simple 2D game library for Go
Netcode that provides networking capabilities to GameObject workflows
New Godot bindings for Swift
Urho3D Game engine
Use the Delta Executor APK with Roblox on a Windows PC.
The AWS GameKit Plugin for Unreal
3D Engine c++
Domination is a game that is a bit like the board game Risk
GemRB is a portable open-source implementation of the Infinity Engine