Rats will play a number of roles in Dishonored's campaign. Not only will you be able to summon hordes of them to savage enemies, but they can also be possessed to scout out dangerous locations. The little vermin are likely to become a useful part of any supernatural assassin's arsenal... and you can show your appreciation by slaughtering them in a newly-released iOS game. It's free, though we daresay it's no substitute for Brendan's latest Dishonored hands-on preview. Well, we would say that.