Tetris the foundation for most modern puzzle games, and also one of the most highly acclaimed video games of all times.
Thanks to revamped controls, rather than securing where your tetris blocks fall, your aim switches over to choosing from a set list of spots they can fall into. That makes the overall experience a lot less mentally taxing without deviating too much from standard play.
The object of Tetris is, of course, to make horizontal lines from the falling shapes. The controls are entirely based around touchscreen gestures. You tap to the side of a falling block to rotate it one way or the other, click and drag a shape to place it, or tap the bottom of the screen to make it fall instantly.