The proposal is very good, but it took me a long time to figure out what I should do (even with the tip), I think this could be resolved by adding some positive feedback: sounds and visual effects.
Viewing post in Zombie Town jam comments
You're right, I was having issues with trying to get something working to give an indication of which "Town" was selected and which one you're going to send units too. I've sorted it all out now and fixed a few bugs but I don't think we're able to upload our fixes which is fine, it'll just be in the final product. Thanks for the feed back.