[youtube]http://www.youtube.com/watch?v=e91q5BtlxK0[/youtube]
Some companies’ DRM is stupidly cruel, punishing only those who have legitimately purchased the game, and not those who pirate it. Well, most companies’ DRM is that. Serious Sam 3′s DRM is brilliantly cruel, punishing only those who pirated it. By relentlessly pursuing them with a giant invincible armoured scorpion. As revealed by Dark Side Of Gaming, only those who unlawfully duplicate the game encounter this immortal enemy, who haunts them from the opening moments.
Source
They should make this a feature in the legal version as well. Achievement [EPIC INSANITY SPEEDRUN]: finish the game with this guy on your ass.