Kind of monotonous after the first couple of doors, inability to aim and the wonky controls hinder the score

the inability to replay levels and the impossibility of some of the jumps brought your score down

Great concept, but poor execution. I can understand the upgrade system is meant to overall avert this, but early on the controls are way to loose and I found myself falling into spikes or getting crushed by rocks while making the proper movement key begin to undergo nuclear fusion from how hard I was pressing it to get away. Additionally, the tires as separate entities causes the irritating glitch where one is stuck below a plane when the rest is on top, rendering the car immobile. This wouldn't be so bad, if the reset button didn't kick you back to the start of the level. If it sent you back to the checkpoint like dying does, it would be a good improvement. Another thing, I kept thinking the back of the car was the front and the front was the back due to the design.

Fix what I've listed, and the remaining star and a half could easily be reachable.

One last thing, I loved the choice of music. It really set the mood properly.