Fun little clicker game! The wave enemies were very cool, absolutely love the theming. Certain upgrades didn't seem to do anything past the first level for me, but weren't disabled like Auto-Builder was? Ex: I couldn't get a third light beam with Additional-Lens. The progression also felt a little weird; one level of Energy Siphon kind of meant I didn't really need to look at the energy tab at all. Aside from those small gripes, good game!