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Christian Strangleft a comment
When I was in school we played a mental calculation game where four students played against each other, each one standing in a corner of the room (Ecken rechnen). Ever since then I wanted to recreate this game in some way or form as an online multiplayer game to practice my mental calculation skills. The result is Mental Royale, a kid/school friendly game where children and adults alike can...
Mental RoyaleMental Calculation Multiplayer Game
Mental Royale is a Multiplayer Math Game to practice your mental calculation skills. You can play against up to 5 other players or practice your math skills against bots (if no one is around).
Mental RoyaleMental Calculation Multiplayer Game