It would appear the game is unoffically based on Games Workshops boardgame 'Blood Bowl'!
... which is based on Warhammer and Rugby. It's not Blood Bowl, or particularly similar to it from what I've heard. (Sorry. I've been wading through threads of people calling the game a Blood Bowl rip-off. Not meaning any offence.) Also, Games Workshop are well aware of the game and have no problem with it, legally or otherwise.
Looks like fun, though not sure how much tactics would be involved in the computer gameplay rather than just action! Is it turn-based by any chance?
Sort of. You can play in Turn-Based mode where the game alternates between 5 seconds of action and up to 45 seconds of planning. It can make a 10 minute game take 90 minutes to play! There is also
Active Pause mode which lets you pause the game at any time to plan moves. This option is unavailable in multiplayer.