I wanted to like this a lot more than I did, but I found it rather repetitive and long. There came a point in the game where it no longer felt like mathematic concepts, especially since some of the explanations didn't stick with me. I can see how math folks would love this, and I personally loved the beginning. I just wish there was a way to spend more time with the concepts you actually like (my personal favorite was subtraction but I only saw her between levels), and I also wish there was an easier distinction between all the endings.