Blood Bowl: Kerrunch is an online mobile game, combination of strategy and sport game, crunching football, but with fully armored Orcs, Skaven, Dwarfs, Humans and, even, Wood Elves, is free to play on Android devices, from Cyanide Studio.
Download the game at:
https://play.google.com/store/apps/details?id=com.cyanidestudio.bloobowlkerrunch