Traffic Jam is an addictive puzzle game that tasks you with driving a small yellow car out of an overcrowded parking lot. It may not sound very complicated, but with increasingly difficult configurations of parked cars clogging the exit, you can be sure it'll have your head spinning in no time.
Each level starts off with several cars strewn about an invisible grid that allows movement only along straight lines. No turns can be made, and of course, cars cannot be lifted. This means that you have to carefully decide which cars to move, and in which sequence, in order to clear the lane for your little yellow sedan. The first few levels may seem ridiculously simple, but don't get too comfortable because the brain-teasing ramps up very quickly.
Traffic Jam is free and comes loaded with alternate themes, in case you're not into the car thing. You can switch your pieces to ice blocks, boats, or simple slats of wood.