I really like the idea here, once I understood the concept a bit better. I wish the money accumulated a bit quicker so you could really send out more waves. A tutorial or deeper explanation on the game page would be helpful (you can still edit the game page after the jam ends, you just can't change the game). Still, I dig the creativity and the art just captures that 'email scammer' vibe super nicely. A bit more refinement could turn this into a gem.
I'd appreciate it if you check out my game too if you have a minute!