Super creative idea and pretty well thought through as well! Love the visual style and how intentionally stressful everything feels. There's something hilarious and fun about having to do fast math in order to fight off eldritch monsters. Would have loved to see stuff like this when I was younger, certainly a much more fun way to learn times tables and whatnot! This feels like this would belong right in an arcade. Would be neat to see it expanded on--maybe some sort of story sequence with set stages/enemies, or a PVP style match doing math against someone else. I feel like people would get a kick out of that. Not to many notes from me for improvement--it is a little overstimulating, so the disabled feature option was super helpful. Had a lot of fun, can't believe you made me enjoy doing math! Good job!