Resident Evil Outbreak, known as Biohazard Outbreak (バイオハザード アウトブレイク,Baiohazādo Autobureiku?) in Japan, is a survival-horror game released exclusively for the PlayStation 2 between 2003 and 2004. A sequel to the game known as Resident Evil Outbreak File #2 was released in 2005.
It was the first Resident Evil game with multiplayer capability, using the PlayStation 2's online network. Up to four players could participate simultaneously in one scenario; alternately, in single-player mode, the player is accompanied by two AI-controlled characters. Outbreak introduces the "virus gauge," which limits the amount of time players may spend on a scenario. The virus gauge rises at different rates for different characters, and increases rapidly if the character is attacked or crawling on the ground. The game lost all online play capabilities for the USA servers in 2007. The Japan servers stayed up but finally went down in July 2011.