ibb & obb is a two player cooperative game set in a puzzle filled world where gravity goes both up and down. You can only succeed by working closely together. Find a friend for some true local co-op couch fun or match up online.

ibb and obb is a puzzle platform video game developed by Sparpweed Games for PlayStation 3 and Microsoft Windows. It began as Richard Boeser's graduation project and debuted at IndieCade in 2008.[1] The green creature, ibb, and the pink creature, obb, travel through a world divided by a thin horizon line; on either side of the barrier, everything is inverted …