I started playing TM:NF yesterday, and it's pretty darn fun (erathoniel in game, if you wanna add me). It involves acrobatic high-speed stunt driving or more normal race driving on courses ranging from sprints to marathons.

    There are no problems with it, other than the editor crashing occasionally, once I put a lot of objects in my maps to beautify them.

    All in all, it gets a four @ rating, for elegant simplicity, good graphics, long-term playability (here-read easy to use editor), and multiplayer capacity as well as its unique style.