Blocks will fall down from the top of screen, as they appear move them left and right using the left and right arrow keys, move them down by pressing the down arrow key, and change their rotation by pressing the up arrow key. Instantly drop the blocks with the space bar. You will notice the blocks are random colors, your goal is to create combinations of colored blocks. When you manage to get a combination (such as 4 blue blocks linked together) they will be removed from the playing field instantly.
Press P to pause and M to mute the audio.