As I continued to play with this game I realized a couple of new things. First, for another $0.99 I can unlock all the hints to the levels. That is a useful feature, though in most games, aren’t the hints free?
Second, there is a points system that tracks use of certain tools in the game and completion of levels. There is also a leaderboard (with 283,200 players), but after playing only a few days, I’m already in the top 100,000, which suggests the game is not widely played! I don’t think the leaderboard would be much of a motivation to students. Once you hit 500 stars, you cannot go any higher. Since the leader board is already filled with people who are at 500 stars, I don’t think new players can get to the top.
Third, the game is available on-line at https://www.euclidea.xyz/en/game/packs, which makes it accessible to students using chromebooks, laptops, desktops, and the like. I like the interface on the web version (and I prefer using a computer to play the levels). On the web version, all of the key tutorials are up-front, rather than distributed throughout the opening levels as in the app version. In some respects the ability to use the program on a computer makes it more likely that I would incorporate it into a lesson as a demonstration or challenge activity.
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