I always like a good ol' top-down shooter, even as simple as it is. I do feel it gets rather repetitive fast, it was also very easy to steam-roll enemies when you get enough upgrades which kinda removes the tension of fighting against a plethora of enemies. I do find the graphics charming, the wisps are easy to differentiate from and act in pretty neat ways. I just wish it had a bit more and personally wish it were more hard. Nice work on the game!