There's a game that's a free download as an app (at least for the iphone, I'm not sure about android). It's a turn based strategy game, you can play as humans (or, if you've bought the $2 expansion, dark elves) and you try to either wipe out the enemy's troops or crystals. You get five turns, then it's the other person's turn, sort of like words with friends.

If anybody else downloads it and wants to play, my username is, of course, Phule77