Ayyy a neat variation on the snake game format.
The first round I thought I could simply avoid the zombies and it'd all be fine, then I saw my health go down :P
The second round I ended up speeding along mostly eliminating zombies rather than eating the pies, primarily because there didn't actually seem to be a benefit besides score for increasing in length. It actually makes things more difficult and likely that you'll get hit by a zombie without any upside.
It'd be cool if it also included the zombies splatted in the end score, I got like 79 kills.
The music and art are a good, a nice bop while boosting around the place.
Nice job overall :D