5 stars: The puzzles are actual math problems. Further puzzles build on the knowledge gained from previous ones. The drawback is that some puzzles are insanely hard, and the game requires you to perfect earlier stages in order to progress. Some of these \
4 stars: Excellent fun and sometimes very challenging. Be prepared to spend a long time finding optimal solutions (or pay) to unlock higher levels! One small niggle: the app quite unnecessarily uses full screen mode, hiding the status bar and soft buttons, and there is no way to disable this.
4 stars: I am honestly not educated enough to solve some of these puzzles, but that doesn't mean I should rate it lower. I had friends who showed me the correct solutions, and I learnt from those experiences. The coding clearly allows for those who passed math to be able to challenge themselves and refresh their knowledge.
4 stars: Very fun and teaches geometric construction through a kind of socratic method. Ability to progress without paying if mastered, but excessive requirement to use hints to discover where v stars are so you can try to get them. Interesting quotes after each solution. Simple yet challenging. Clean, pragmatic interface. Well made.
4 stars: Excellent challenging game. Impressive coding how it always \
5 stars: Super fun to practice geometry. Wish I could go through euclids proofs, also I don't like the idea of needing to find a specific proof to continue (i.e shortest proof) and that sometimes it...