an endless experience, user mods allow months of playtime, not to mention the multiplayer experience; ttt is really fun. I never really got into rp but I think people have loads of fun on that, too. This game often goes for 75% off on Steam and this is a game that really should be in everyone's library.
one time when i was 9 i went into theatre mode and was lead into a room by a bunch of guys. they kept asking me weird questions like "do you enjoy milk" and "does your dad play a lot of tetris" it was bizzare. they kept playing scene music like paramore and my chemical romance. then like after maybe 30 minutes they played a video of the ninja turtles cumming on a pizza. i have never been the same since