Really fun game!
The only thing I thought might help playability would be a key to speed up the block movement (as I found myself waiting for the currently moving block to go across if I needed it on say, the right side of the screen, or if I missed my chance to place it first time), so you can quickly get it close to where you want to drop it, but a great submission!
PS - Also loved the 80's retro vibe, loading stripes homage, and the music!!!