This is nice. As someone with dyscalculia, I often struggle with simple arithmetic under pressure. This is a really neat exercise for this. I get mental fatigue pretty fast from playing this and can't get past the first level of the dungeon before my abilities just break down lol. But, that's what's required to exercise that mental muscle. Hoping to be able to unlock deeper levels in future. I also think a mini-map would be a good idea (someone else suggested it below) as I found myself going around in circles a lot. But overall nice game!