Thanks for submitting. The experience really makes me feel like I'm in a library fighting off monsters. However, where is time? Regardless on whether the entry incorporates the theme or not I think it's a polished game!

Nice work! The pixel art and music are really nice and it's a fun, easy to grasp game. I think some indication of which side of the screen the next enemy wave is going to come from would be nice but I understand the need to keep the UI simple and the ability to slow down enemies helps alleviate that issue.