Update - The numbers continue to grow for Rust. According to RPS, the Rust income is now at 55% of Garry's Mod's lifetime earnings.
Original Story - Owners of Garry Newman's popular Source Engine-powered physics sandbox, Garry's Mod, could have reasonably expected Newman's new venture, Rust, to have a modicum of success. But even Newman himself is shocked by the outrageous numbers that the new multiplayer survival game has done in the first month. According to Newman, Rust has already made 40% of Garry's Mod's lifetime income in only one short month.