Quadris

Quadris is a puzzle game that's similar to Tetris in many ways, but it requires even better reflexes. Your objective is to place the geometric shapes on the screen and fill entire rows. As you fill up rows, you'll earn points, keeping in mind that the more rows you fill at once, the more points you'll get.

Playing Quadris is very simple. On the top of the screen, you can see the current piece as well as the next to come. There's always an extra piece you can swap in, too. But if you can't place the current piece or the extra piece, you lose.

Quadris is a puzzle game with a simple but fun premise that you can play for hours on end. The game also takes up very little space (less than 2.5 MB), so you can play it on practically any smartphone.