I love the idea of combining Tetris-esque puzzling with tower defense! I'm left kind of wishing that you actually drop the blocks in real time, like in Tetris, rather than clicking on them in the queue--managing both blocks (good) and enemies (bad) falling at you at the same time could be really fun! I also liked the you could place turrets. I think the turrets should have been cheaper, and I also think the game is a bit too hard in general (which is a common problem for game jams, of course). Overall, great work!