Good game. Personally, I was terrible at it, but I'll give what I can. In the title screen, a lot of the textures have inconsistent pixel sizes. F.e. in the play buttons and such some portions were 2x2 pixels which some were 2x1 or in the background the tower's outline is very inconsistent, with it being thicker in some areas and thinner in others. The outline is also thicker on the horizontal sides. I couldn't actually complete the game so take this with a grain of salt if I am wrong, but it only looks like there are only two doors, which gets stale.