I didn't like this game at first. As I got past the poor gfx I found a game worth playing. Nice Co-op and BattleChains.

A BattleChain is a PvP game mode.
You score points on whatever lvl, send it to another player. That player must score higher than the score you sent.
The turn is sent back and you do the same. The score getting higher & higher until one player gives up because the score is too high.

1:invite
2:verify
3:send game
4:bye