Source code repository of the FreeOrion project
Kitty-Tools is a Kahoot Cheating Client for all devices and interfaces
Flax Engine, multi-platform 3D game engine
Open source clone of the Age of Empires II engine
3D game engine/framework in C, with Luajit and Python bindings now
A lightweight game server framework implemented with Actor Model
A free and open-source Touhou Project fangame
3D game engine with lua scripting
Doom-based AI research platform for reinforcement learning
Botcraft is a cross-platform C++ library to create bots
Multi-platform 2D and 3D game engine
FlightGear Flight Simulator: free open-source multiplatform flight sim
Vivid3D is a C++ IDE/3D engine, with python scripting.
A planetarium software that shows a 3D simulation of the night sky
Maze creation, solving, exploration, and analysis
KildClient is a powerful MUD client with a built-in Perl interpreter
Full featured MUD server with all the trimmings.
MIDI/HID IO mapper and Virtual HID manager with force feedback support
All-in-one game engine built on Godot. Roblox & UEFN alternative
A MUD client for Android, iOS, Linux, Mac OS X and Windows
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)