The Garry's Mod Website has word that this Source-engine sandbox has now sold over one million units: Word is: "I did plan to release a big secret update I’ve been working on when we hit 1mil. But it’s not ready – you guys beat me to it. Anyway – thanks to everyone that’s contributed to Garry’s Mod – whether that be directly by dedicating your time to creating new content for other players or indirectly by playing and enjoying all that Garry’s Mod has to offer!" Thanks Gamasutra.