Cool concept and congrats on finishing your first game!

Very nice game. I like the fat-thin mechanics and I like that they also apply to the character. A little tip I can give you is to set the filter of your pixel art sprites to "Point (no filter)" on the inspector to get rid of the blur. Very fun game!

Neat concept. My only suggestion would be to have some sort of end state either with a timer or winning by making all the zombies explode.

I made a lot of them fat but they lost weight so quick as well! Cool game though!