AddictingGames

A lot of the games are harmless -- and some are even educational. There's a completely addicting "Mini-Putt" game where you can practice your miniature golf skills, or "50 States," where you learn geography by dropping a state onto its correct spot on a map.

But there are also games that feature obscene material, drinking, swearing, and violence to humans and animals. Take "Five Finger Pellet," for example: The game's object is to stab a knife into a table as many times as you can without hitting any of your handcuffed victim's fingers. To top it off, when the victim gets sliced and blood spurts out, he belts out a menacing screaming sound. Or, there's a little game called "Animal Hunter" that involves a Robin Hood character shooting arrows at cute little bunnies and ducks while strolling through a Tolkienesque forest, backed up by an Enya-inspired, bird-chirping soundtrack. The site uses a bomb icon to warn users that a game "may or may not be suitable for ages 13 and older."

Online interaction: Registered users have the option of playing with a friend, and can connect with friends through Facebook to play. They can also leave comments, which tend to be game-focused without personal attacks.