Match at least 3 marbles of the same color in middle row before time runs out and beat your best score.
1.8 version:
* New game design
* Added missions to singleplay mode
* Interactive tutorial added
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1.8.5 version:
* Added game tip: middle row glow
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1.8.6 version:
* Changed sign-in
1.8.7 version:
* Fixed bug with saving game