Eleven Puzzles builds highly cooperative online escape rooms. The first game, Unboxing the mind of a Cryptic Killer, is played online in a web browser with players using separate devices. Puzzles are designed to encourage cooperation and communication. The game is designed to appeal to users of all skill levels and often is played as a team building excercise. Usually players complete it in 90 minutes. In the game, you are tasked with helping two detectives escape the clutches of the Cryptic Killer, a notorious serial killer who had evaded their capture during his reign of terror but has reappeared years later.