Oh, you gamers. I've just never understood the appeal of video games. And the more complicated they are, the less interested I become -- not complicated as in difficult, but complicated as in, well, universes and rpg's and all that jazz. I do enjoy a game of Tetris (original game cartridge, by the way), but that's about it.
For me it's being part of a story rather than just passively following along.
You will struggle to find a better Science Fiction story and greater characterisation in a film or TV show than you'd find in Half-Life 2.
KOTOR is still IMO one of the better Star Wars stories every told.