Try to make solid rows of pieces all the way across the game board.
The rows disappear giving your points when they are completed.
You are given exponentially more points for completing multiple rows at a time.
Try to complete up for 4 rows at one time for maximum points.

At the same time, 3 blocks side by side, with same colors will disappear to.

Actions

tap on screen - rotate piece

swipe left - move piece left
swipe right - move piece right
swipe down - move piece down
swipe down quickly - drop piece down