Restore Blue - there's a grid od gems. When you touch a gem then color of every gem on the crossing changes in round-robin manner, Blue->Green, Green->Red, Red->Blue. You need to restore blue everywhere.
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Free Sonic Mania Plus apk download android mobile Free
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Sonic and Knuckles Sonic Free
The game follows both Sonic the Hedgehog and Knuckles the Echidna in their respective quests