11eyes was originally released by Lass in 2008 as a blood-drenched, school-themed eroge subtitled Sin, Damnation and the Atonement Girl. The game later received a non-ero edition for the Xbox 360 called 11eyes CrossOver, and eventually it was also adapted into an anime that aired from autumn 2009. As expected, considering that pretty much all the other games produced by 5pb. already had an anime version: Night Wizard, Chaos;HEAd, Prism Ark and Memories Off.