I often get addicted to Nitrome's little casual games. If you ever have time, you should check out their full library. However, I wanted to give Fault Line a little spotlight today. I played through all 30 levels and did fairly terribly, but it was fun to figure out how to proceed. Basically, you have to fold the level at certain points to proceed through the games. Overall, controls aren't bad. There are moments when you'll become upset when you can't reach a fold section, but that happened to me towards the end. It's a good game, so give it a try if you're bored.