A cross-platform PSP emulator
RetroArch is a frontend for emulators, game engines and media players.
The game engine for everyone
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Open source library for creative expression on the web, desktop, etc.
New Godot bindings for Swift
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
99 Nights in the Forest Script - Bring All, Auto Win, Auto Kill.
3D Engine c++
GemRB is a portable open-source implementation of the Infinity Engine
A complete 2D/3D Arcade Game Engine for Browser (Blender compatible)
A MUD client for Android, iOS, Linux, Mac OS X and Windows
Virtual Las Vegas casino experience with slot machines and other games
INSTEAD - Simple Text Adventure Interpreter.
quiz game with spin wheel
Platform independent browser based Str8ts solver
Platform independent browser based Sudoku solver
Urho3D Game engine
The forever free, adless and open source chess server
Play Sudoku on your Mobile and Windows
ZED OS the clone of Windows XP
2D Game Engine
MAME Android Emulator.
Character animation system for games and simulations.