Woah, awesome mechanic! It took me a sec to figure out what was going on with no instructions or tutorial, but once I got it I was so impressed! A Tetris shooter was not on my Bingo card! I thought it was cool that after you use up a block, it falls, and then you can kill enemies with it. Tried to get a line to see what happened, but couldn't do it in the short time I gave it. The weirdest part of it was that the L pieces only shot 1 direction, which was confusing to me for a while, and made aiming feel strange, but it made sense after a moment. I think the only thing this needs is instructions, and a ramping diffiuclty, since I was never really in trouble after I figured out the mechanic. Also, maybe the rest of the tetris pieces to fill out the set. Really, really good game overall though!