It seems people are one way or the other with this app in the reviews. Ultimately, it’s basically everything you could realistically expect. It meets the goal that it set out. It may not be in-depth, but it’s exactly what it promised. So for that, it’s a great game. There is one legitimate issue that has already mentioned that I experienced twice out of my first three playthroughs. That would be the ball getting stuck at the top. If it gets the right angle, it bounces off the top of one of the highest red blocks, and then gets stuck at the top. As a student who is actually going through the lessons in the CodeHS website, I find this to be a valuable experience. It’s a great game, and it’s always good to listen to the experiences of others who have played through and tried things you wouldn’t think of, and then use that info to improve!