Ben 10 omniverse 2 is not the co-op game expected. In the first game two players actually complete the entire game together, great fun for parents and children of a suitable age. This game (Ben 10 Omniverse 2), however, is for ONE player ONLY, and the co-op parts are in the 'arena' a separate fighting part of the game, areas of which have to be earned by completing the game solo.
On the box, co-op is stated, which is mis-leading. There is also a lot of running around an alien ship avoiding obstacles, extremely hard for younger children.
AVOID if you are expecting a continuation of Ben 10 omniverse 1 gameplay and 2 player cooperation. This game is a return to the shoddy attempts pre-Ben 10 omniverse 1, and will be a complete disappointment to both children and parents alike.