UM writes: "Finishing a game can sometimes elicit a twinge of remorse. You had all this fun challenging yourself, but now it’s over. Sure, you can just start from the beginning again. However, repeatedly replaying a game the exact same way can get… uh, repetitive.
To combat this major downer, game developers started including new fun things to unlock as you progress. They serve as a reward for players who stick it out to the end, and they also give curious players a treat for exploring every nook and cranny of the game.
Or, they could drive you to the point of insanity. With regards to that last category, here are the video game unlockables that gave us all aneurysms."