Oh, this is fun. One aspect that's interesting is that you don't know whether the other people playing are trying to be collaborative (I'll stay out of your way, let's fill up the board together) or not (I'm gonna try to make you crash). I've been playing in attack mode (be the longest, crash everyone else), personally.
Neat, but control is AWKWARD. Sometimes you move one square, sometimes you move two and BAM. WALL.