I made it to round 7!! :)
The theme was definitely implemented very well - everyone knows the Bricks game, but no one has been the one to place the bricks for defense before.
The game is definitely enjoyable and has the potential to become much more (if you spend more time on it beyond the 48 hours).
There's unfortunately a bug where placing the bricks causes the entire screen to turn black, making it difficult to position them correctly. The idea of the healing bricks is really cool and adds more depth to your concept.
The UI could be improved for better clarity. It took me a while to realize that the upper half is essentially the shop and the lower half is the game. But after a few seconds, I figured it out.
Thank you for creating such a cool game.