I've just been doing my pre-breakfast web-dredging and come up with the Mutant demo from Napoleon Games. It's based around a man with four arms. Four arms means that he can carry four guns! Imagine the possibilities. Actually what it adds up to is a top-down shooter with some weird auto-firing stuff as your secondary pair of arms wave about in the direction of your enemies.
It's actually briefly entertaining, especially since the hordes of enemies that you find around the Czech capital must kept at, er, arms length if you want to stay alive for more than a few seconds. It probably needs to highlight ammo a bit better and leave more of it around on the open level. I quickly ran out and died. But then it is very early and I've not had my oat-based cereal.
What would you do if you found yourself in Prague with an extra pair of arms, readers?