There's a secret co-op mode hidden in The Binding Of Isaac: Repentance
Modders have discovered a co-op mode hidden in The Binding Of Isaac: Repentance.
(thanks, ), dataminers discovered the launch command "networktest" hidden in the code, and soon realised that it permitted the game to be played in co-op via the game's debug console.
The discovery is particularly interesting given that while there are some workarounds that enable co-operative play, the game is still clearly marked as a .