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From Nicolas Lehovetzki:
Stimulate your brain with an addictive mental calculation game !Follow your world ranking with the Game CenterThe principle of the game is simple :- click on the bubbles in ascending orderThe bubbles turn around, time is limited and there are many tricks.It is a calculation game, but also a speed and concentration challenge.Available as an universal app for both iPad and iPhone/iPod touch- 5 levels of difficulty- very difficult at the highest levelsWill you match the challenge ?From the same author :AB Math - fun game for kidsWord Domino