Probably the most interesting part of Knights of the Old Republic is the fact that you can choose to follow the light side or the dark side. What you say and what you do will decide which path you follow. If you act like a jerk to everyone you see, kill people, steal, etc., you’ll earn dark points. Helping people out and being an all around nice guy will earn you light points. There’s a dark-light meter and your character's position on that meter changes with each point earned. Whether you choose the dark side or the light will have a pretty big impact on the game itself. For starters, your character’s appearance will chance significantly if you’re a Sith. Your eyes get all freaky, and your skin gets really pale. The game is FULL of lots of little side quests, and some quests might not be available to you should you choose the dark path. If you make someone really mad, they aren’t likely going to recruit you. Your party of characters may even differ somewhat depending on what path you choose. In my frenzy to become the evilest Jedi this side of Coruscant, I got a little carried away only to find out that a certain party member would no longer join me.