This is awesome. It took a second to understand (even after reading the How To Play), but I was hooked as soon as I "got it". Desert Bus was cruel but it made sense as the final level. The core mechanic here is so simple but you found so many ways to attack it in a short amount of time, you have great instincts for level design. Also dig the sense of humor. My only complaint is the one really squeaky sound effect, but no big deal. I would love to see this expanded upon.