Great game! Reminds me of polybridge :D. The puzzles were really nice and satisfying to solve, my favorite ones were the levels including water, I think if there was a version of your game with only water levels I would for sure buy it! Though, I have to say, some levels had a strange bug where the flag would turn red even though the building barely moved, and vice versa. I think adding a condition, maybe "only if the flag is under a certain angle it can turn red" would be good. Very solid entry!