Very cool! I must admit I have never played Plants vs Zombies, so perhaps that made it a little harder for me to catch on. I sort of had to find some things out the hard way, like what does it mean for a human to "see" a parasite, before I understood how it worked. However, was still a fun game and I managed to beat it without too much difficulty once I got the hang of it. I enjoy games where you have to balance on offense vs support, so nice job implementing the different parasite types. I had fun trying to stack as many rows of the green guys as I could while still maintaining enough firepower to ward off those pesky humans. Great job!