The issue with this game is twofold. It keeps the same pricing structure as its inspiration, Plants vs. Zombies, but shrinks the map. This means that enemies get to your units quicker, and you have less room for econ and defenses. This means the difficulty is higher, and not in a fun way. It also is lacking any form of fail safe, like the lawnmowers in the aformentioned PvZ. Beat 1-7 and was disappointed enough to leave a review.