COD4 Open Source Reimplementation

An oldschool sample-based music composition tool.

The 2013 edition of the Source SDK

minecraft-classic

SoftICE-like kernel debugger for Windows 11

A reimplementation of Mario Kart Wii's physics engine in C++

gigantic, obese SourceMod extension library of sigsegv's TF2 mods (mostly MvM related)

Volt (VPhysics Jolt) is a replacement physics module for the Source Engine.

Mario 64 as a library for use in external game engines

A Super Mario 64 decompilation, brought to you by a bunch of clever folks.