I think this is a very promising concept! However, I think a few small and easy-to-change things are holding it back: Controls are a bit awkward, having to move your mouse to the far edge of the screen to place every single piece. The pieces also fill up your hotbar on the bottom way too fast, at least for the start of the game. And it would be nice if they maintained the same order (new pieces always appear on the right, and pieces shift to the left after a piece is used, instead of leaving an empty space). And having a proper restart button would be nice instead of having to refresh the page to replay. Like I said, I can see this being a very fun and fast-paced little game, and the concept is really good, but it can get a bit annoying to play because of those reasons.