Good tower defense game! I had a bit of trouble at first (only made it to wave 3), but then after i got the hang of the game I managed to just breeze through it. There is a small glitch i found where if I upgrade the eye to maximum level it caused the Gold to be NaN (which I assume is infinite). It might've been the way I clicked it or something in the logic I'm not sure, but i like the eyeballs. They aren't exactly candles but it's light and it's a decently fun game. Good work!