Neat game! I enjoyed it, and I played for a lot longer than I thought I would. Just one thing… Your short description calls it a “tower defense”, but it doesn’t have any towers, so it would just be a defense game. It’s not really an issue, but I wanted to mention it.

Nice defence game and good control design.
Good job!

Cool and quite ambitous game!

One thing I didn’t like is that it took such a huge amount of upgrades to even have a chance of beating the first wave. I think you should lower the difficulty curve a bit, at least at the start of the game.

I stopped at 1398 kills, I got to the point where you loop to get back to wave 1 and it becomes difficult to die :D

Nice game!! Interesting mechanics, and the upgrade page is really neat.

Congrats!