Outbreak is a co-op survival horror game from Dead Drop Studios LLC that draws inspiration from 1990s classics. The game places players in a city overrun by the undead, requiring them to manage scarce resources and contend with permadeath. It supports local 2-player splitscreen co-op and up to 4-player online co-op, with all modes also playable offline.

The game includes Campaign, Nightmares, and Onslaught modes, each offering distinct challenges. Campaign and Onslaught modes can be played solo or cooperatively, while Nightmares is a narrative-focused single-player experience. Enemy and item placement is semi-random, increasing replayability across its brutal difficulty settings.