Nice tower defence! I loved the inclusion of the tutorial. Well done!

Suggestions for future improvement:

• Make the background and the paths a bit more distinct from each other. I found it hard to tell them apart, and placing items down was a bit more of a guessing game. 
• Change the coin location to the upper right corner of the screen, or place it entirely differently from the item selection table. I often forgot how many coins I had to spend because I kept thinking they were part of the item selection.
• It would be nice, I think, to be able to collect the coins in the middle of the round so I could buy and place items as the wave went. 

Wow I'm really impressed. Lots of cool ideas and a really great tower defense game. Sometimes the mice were a bit overwhelming, especially when I was trying to learn how to play. Maybe a round or two with only 4 or 5 mice to get people used to the cycle between defending and buying upgrades. It was great once I understood what I was doing.

Really solid game guys, excellent work!

Good game. I love the unique setting and thematic traps.

This was great! Awesome work