ok.... to all the idiots...
This whole game is pretty much a reference to Monty Python and the Holy Grail.
There are dudes wearing backpacks in this game once you get to like wave 15 that are holding 2 coconut halves. This, in the movie, was the "horse" that all the knights rode but not literally, it was just sound effects. The beast of Aaaaaaarrrggh!, the black knight, and the killer rabbit are also references to the movie.
---To the creator---
This is a good game, though a little hard. You may want to lower the prices of some things or keep the current prices and make the upgrades stronger.
I made it to wave 19 and then got destroyed in like 5 seconds. It was depressing :P.
But overall, good game. It just needs a little more work.
---jbarnett---