Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

Flax Engine – multi-platform 3D game engine

s&box is a modern game engine, built on Valve's Source 2 and the latest .NET technology, it provides a modern intuitive editor for creating games

Central repository for tools, tutorials, resources, and documentation for robotics simulation in Unity.

Materialize is a program for converting images to materials for use in video games and whatnot

Remote Procedure Calls for Kerbal Space Program

Source code of tactical space game Flotilla (2010)

Buff/Debuff/Modifier library focused on feature set and performance, while maintaining 0 GC. Fully pooled

Runtime customizable ragdolls in Unity. With transitions to and from animated states.

Update to r4m0n Dammed Robotics for Kerbal Space Program

Source code to read and decode the images from the Voyager 1 space craft's Golden Record.