Very nice game! The mechanics are just right. I would recommend to outline the main tile when you are given multiple. Using isolation it isn't very clear which tile you'll end up with.
you get a crash if you right click with wrecking ball selected.
I don't know if I like the reroll of tiles when you use wrecking ball. You end up relying on chance that rerolls will fit the whole you made for what you previously had.