When I first saw this novella, I looked at the picture of the unicorn on the front and thought, 'Hey, look at that. A Zombie-Unicorn mash-up.' Now, just to manage your expectations, it's not about zombie unicorns.
It's about zombies who are obsessed with corn. Like, sweetcorn. Corn-on-the-cob.
I know! I thought the exact same thing! But d'you know what? If anyone can pull off a story about zombies who love corn, it's John Green. Zombiecorns is on a creative commons licence (i.e. free download) and John Green has put this blurb in the front basically saying 'Oh, I just rattled this off one weekend. It's full of mistakes and doesn't scan very well, but here you are anyway.' (Or words to that effect). And it's still a really competent piece of writing.
Damn you, John Green, for your excellent writing skills.
Anyway, Zombiecorns is set in a post-Apocalyptic USA, where almost the entire population has been zombified by an errant strain of GM sweetcorn. Our heroine, Mia, is one of the only still-humans around. The narrative switches between present day, where Mia is holed up in a basement, alone, terrified and with only dwindling supplies of food, to some point a little while in the past, where she was tooling around town blasting the shit out of zombies with her friend Caroline.
Zombiecorns is a fun read. It rockets along and okay, it's not as polished as the rest of the John Green canon, but it's still a decent read for a couple of evenings and worth a solid (and fangirly)...