An open-source sandbox tower defense game
Desktop/Android/HTML5/iOS Java game development framework
UCI chess engine
A simple and easy-to-use library to enjoy videogames programming
Godot is a powerful cross-platform game engine
One framework for creating powerful cross-platform games
Open source HTML5 game framework that offers WebGL and Canvas
The game engine for everyone
RetroArch is a frontend for emulators, game engines and media players.
Home theater software and entertainment hub for digital media
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Urho3D Game engine
Netcode that provides networking capabilities to GameObject workflows
An open source reimplementation of the Among Us Server
A dead simple 2D game library for Go
New Godot bindings for Swift
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
A MUD client for Android, iOS, Linux, Mac OS X and Windows
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
3D modeler, 3D game maker, 3D demo maker
Orx: Portable Game Engine