it's fun for one game because you gotta look a bit better and get the feel of what makes 1-9 with what... but then it's just a sudoku, and an easy one at that. :S
Theres a few glitches. 1 cpu's can kinda hook onto your car and run you into the sides.
and theres a few invisible walls that really bothered me scattered throughout the maps.
 "Farm of Souls"){kind=icon}
 "sudoku cube"){kind=icon}
 "Path of Honor: Chapter 1"){kind=icon}
 "Go Kart Go! Turbo!"){kind=icon}
 "War in the skies"){kind=icon}