Batman: Arkham Asylum

you don't have to make numerous bugs though, you could settle for just making one progress breaking bug (like they did here).

Quote from Defrag

Very cool, but they've got to be very careful with that sort of 'protection'. I've read about similar things before and there was a lot of negative word of mouth about it. In particular, I remember reading about one game which included several deliberate crash bugs in the pirated version; the game soon gained a (totally unfair) reputation as being really buggy because of it! Furthermore, the more features you add, the bigger the risk of adding more bugs and/or introducing the sabotaged feature in a legitimate customer's copy.Subtly destroying a pirate's enjoyment of the game is pretty funny though, and I'm guessing since it's buried in the game mechanics it'll be a little harder for the pirates to find & fix. Not that much harder, though...

Titan Quest?

Seeing as how Activision are douches and delaying Modern Warfare I went and bought this instead on steam for my new graphics card. Really cool so far Batman is buff as fuck in this, geez. His arms are as big as my leg!

Fuck, I just got to the intro. Closed the game, bought it and went on playing it. Dammed it's good.