Tower defense with a "twist." Yawn. Besides, 70 waves on the first map? With no save or fast forward? I know I'm playing flash games on the internet, but dang, I got better things to do. 3/5
I would like a manual save file, and not an autosave. It sucks to actually get something going on hard, only to lose several survivors and squares to one zombie attack.
Nice game. Rather addictive. If there's a sequel/upgrade in the works, I'd like to see a couple things, like smaller boats being totally capsized when a large whale hits them. Also, something along the lines of a 'reputation' meter that grows when you attack ships, and shrinks when you stay underneath the water. The higher reputation, the larger ships that come after you. Maybe also dependent on the size of the whale. A large whale is going to attract attention, even if it did nothing but eat fish.
Here's a tip that really helped me in the Dead on Time challenge: re-map the wiper and horn keys so you can use your other hand to control those, instead of having to chose between steering and horn/wiper control.