So I just started playing Spintires and have decided that it's fantastic. It's like playing with Tonka trucks in the back yard, only with better sound effects. Also, some of the mods are pretty awesome. I mean, what other game allows you to off-road a UAZ-452 Loaf? Or a MAZ-535?!
If you're a gear head, you should at least check this out. It's more fun than it has any right to be.