Lot of fun but the difficulty ramps up very quickly! High score 4320 which I think is a good effort... very tricky to get the Tetris four-in-one since you're so limited with the total height and it becomes a matter of luck which piece appears even once you've made a channel of the necessary height and you're crossing your fingers that the 4x1 rectangle will appear. I think you could be a bit kinder by increasing the maximum height in the Tetris. Something that irks me is the fact that the next piece drops as soon as this one hits the layer below - in other Tetris games you get a fraction of a second after it's "landed" to make an adjustment before you lose control of the falling piece. When you want to fill an "overhang" it's often necessary in Tetris to make a last-moment left or right move with a piece that can fit in the overhung gap, but in your game this doesn't seem to be possible. Consider giving some "coyote time" for this!!

Simple but effective graphics, quirky tune and SFX. Would prefer it if the parachutists didn't vanish entirely when they're behind an obstacle!