Puzzlejuice is a hybrid word and puzzle game. Multicolored blocks constantly fall from the top of the screen, and it’s up to you to arrange them. Once you complete a row with these blocks they will turn into letters. The only way to clear out these blocks is to spell words. You can also match colors—that will make letters too.
There is no separate, dedicated co-op mode in Puzzlejuice. However, two players can split responsibilities in a single-player game, with one player handling the blocks, and with the other player making words. This works well on an iPad, but it is impractical on the smaller screen of an iPhone or an iPod touch.
Here is video of two people playing Puzzlejuice cooperatively on an iPad: http://www.youtube.com/watch?v=ezpFkdQUGEo
iTunes page $1.99