Really fun game! There are a ton of nice little features in this that were really fun and enjoyable.
I liked the harvesting of grapes to pay for new towers, and that it wasn't dependent on killing the foxes -- that made it feel more like PvZ, and I appreciated the feel that it gave the game.
The day / night cycle was a really nice surprise, and I liked seeing the game go to night. The fireworks at the end were a lot of fun!
I like how the cost of the towers is not written numerically -- it makes it very intuitive about the cost, and that felt fun.
One trouble I wasn't sure about was whether 1.5 was a faster fire rate, or if 0.75 was a faster fire rate. Is that the firing rate, or the firing delay? Adding some units there (0.75 per s) would have been helpful for me.
Overall I really enjoyed the game -- it had a good amount of polish for just being a 1-week game, and I am very impressed!
One thing that I found difficult was to read the small text, and when I tried to zoom in with the browser, it didn't make the game any bigger. Not sure how to fix that, but it's the only other trouble point I ran into.
Great job on the game -- it was very very well done! The music was pleasant, I found the artwork to be delightful -- it was all great. Nice work!!