Cute take on reverse Plants vs Zombies. The addition of the speed button helps a lot, and including a tutorial in a jam game is always a nice touch. It's also smart that the mana caps at 20 so you can't just AFK for awhile and spam out a whole bunch of ships lol. The player AI is pretty decent too. Nice job creating your own music and sound too!
I'd appreciate it if you check out my game too if you have a minute!