Feel free to suggest improvements! Click and drag to select adjacent gems to swap. Try to get 3 or more like gems in a row, either vertically or horizontally. The more gems arranged properly during one turn, the more points you get. If there are no more valid moves, stop the clock to get the remaining time as points. Press the new game button to start a new game. The number on the bottom right of the new game button represents the number of gem types to be used in the next round. Press 4, 5, or 6 to change that. The game is generally easier with fewer types. (Instructions also available inside, by clicking the help button)
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