Gameplay:
On a 6x6 fields big game always come to new different colored blocks from above - as in Tetris. However, they will always take the same form: 2x1, each single cube can have one of 6 different colors. A player's task is now to the blocks so to place on the field that always three same-colored cubes in a row are (horizontally or vertically but not diagonally). These then disappear and there are points.
Control:
The controls are simple and intuitive: the falling stones are simply placed, by tapping with your finger on the pad. With one button you can change the colors by and drop directly with another stone. With the two arrows you can rotate the playing field. That's it, you do not need more.
Graphics / Sound:
The graphics are very colorful and vivid, but affects a whole not so professional, but more like a hobby programmer. The background sound is quite arbitrary, but also does not go too fast on my nerves.
Other:
The demanded permissions are manageable, the storage space required also. The Amazon Game Circle will support with leaderboard.
Conclusion:
Well-made puzzle game reminiscent roughly a 3D version of Tetris. For less than 1 euro quite recommendable.