Reiner Knizia's Clustermaster (com.tribeflame.cluster_master) on Google Play
Review by DigitallyDownloaded: "...you can’t go wrong with this game. It’s entertaining, well-balanced challenging and addictive – just like all good puzzlers are." 4.5/5 Stars Cluster Master is a new puzzle game by legendary game designer Reiner Knizia. Fit the hexagons to build clusters of the same color. Larger clusters will give you more points. Play against the clock, or with plenty of time to think it through. There are 4 game modes in total! Special bonus-gems that work in all modes can earned by playing in-game.