Decent. Just Decent.
It's not exactly an original concept, there are tons of monster truck games out in the world, but I have never seen one where you can start falling into infinity if you go off the test zone. It was... Interesting. It was a decent game. Not great, but decent. Better than a lot out there. Which isn't really saying something, because it's not all that hard to make a decent game. Also, the music just sorta stopped. Overall, it was decent. And please excuse my repetitiveness.