This was a really fun game! It is so simple and easy to understand, anybody can play it, and the "show don't tell" approach to tutorials is excellently done!

very nice puzzle mechanic: simple and thematic. Good tutorial levels so no instructions needed!

This would make a great puzzle game with more fleshing out. Just throwing a few ideas at you:

• At the moment, the UI is more complicated then needed. It makes more sense to just let the player click on where they want to place a brick. Though, perhaps other mechanics were omitted due to time or other factors and this is quite understandable.
• The puzzles are not very difficult, which is perfectly fine if you're aiming for a more casual experience. I can imagine additional mechanics (e.g. slopes, lava that could be turned to stone) that would give the puzzles more challenges and flavors without making the game overly complex.