Reviews: 8 Rating: 9.0
By tapping the color balls into the tubes, you can sort them.
Great game, really gives my brain a push at about level 31 or so. The app is not really free from ads (sadly), but I find the amount of ads acceptable compared to other apps I've played on. Sometimes restarting the level needs ads too but sometimes none is needed. Nonetheless, I highly recommend this app. ( unless you fall into a state of coma if you overuse your brain )
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Its a great