Notrium (Score 5, Informative)

One of the best on there, and I've played tons of them, is free and highly recommended by me: Notrium At first it seems sort of hard, especially if you don't play as a human but it doesnt take long to learn and you can beat it in a short period of time, perfect for anyone playing a long and involved game like KotOR that needs to take a break but doesn't feel like actually doing anything productive.