Great game!
Loved the mechanic for turning into a zombie when dying. Text wrapping, as GIGATANK 3000 said, have issues, maybe if you use text auto-size, change size of text objects.
But overall, game is great, you can add some other features to it, and make it look like a great mobile game to kill your time! Controls are intuitive, and even can be easily adapted for phones, graphics are simple, but i did like them, makes nice atmosphere, but maybe with some fog or effect like that, it will look like real apocalypse! Sounds are not bothering, they are nice for a game like that, but music is really good, enjoyed it, really fits to the theme.
Also, think i got the bug, does it hides the road when you are zombie?
Would look for your other games, or maybe some evolution of this project! Good job!