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 and gravity works in opposite directions. The game is focused on cooperative play and the two characters must work closely together to progress through the game.

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.
Fall up and jump down through 15 levels filled with double gravity puzzles and discover 8 hidden worlds that will test your new non-Newtonian skills to the maximum.
All levels have their own unique music, composed by Kettel, known for his warm melodic electronica.
Key Features

ibb & obb Key Features:
1, Local and online co-op
2, Warm electronic soundtrack by Kettel
3, Steam achievements, leaderboards, multiplayer, cloud saving and trading cards
4, Secret levels that will test your skills to the max