Re: Croteam implements the best anti-piracy measure ever in Serious Sam 3:
Batman: Arkham Asylum completely removes and uninstalls the flight physics if it detects you have a pirated copy. So when you try to fly (which is in one of the first rooms in the game), one of two things will happen:
1. Your game will error from not finding that file (Rare and unlikely)
2. Batman's glide trajectory will be all sorts of fucked up.
Since its acquisition of Rocksteady parent Eidos, Square-Enix has announced plans to use similar DRM in its upcoming Final Fantasy XIII, where any attempt to use magic will always result in summoning a rampaging horde of Chocobos to crush the party, the player, and anyone they've ever loved.