Recently on Offworld, Valve announced another infected incidence with Crash Course (above), a new downloadable campaign for the original Left 4 Dead due in September that will bridge the No Mercy and Death Toll episodes with an entirely new location, and PopCap continued to perfect their chesty/lusty zombie parody with a new set of Evony-busting banner ads. We also saw Braid creator Jon Blow tease his next game, The Witness -- described as "an exploration-puzzle game on an uninhabited island" -- by dropping a Tao Te Ching quote, as Braid itself is confirmed to come to the PlayStation 3, and we found new details of the Wii/Xbox 360/PS3 remake of cult hex-strategy game Military Madness/Nectaris. Elsewhere, AI specialists announced a competition that will use science to build a better Mario, Taito teased Puzzle Bobble for the iPhone, Sega fanatics released the long-fabled 32-bit Virtua Hamster (!), and we looked at an 8-bit iPhone NES synthesizer. Our 'one shot's for the day: Keita 'Katamari' Takahashi, shoeless and amused, and Super Mario Lilliput.