This is a cute game with a lot of charm and has a seemingly endless list of mechanics, but I can't help but feel like the scope creep may have gotten in the way of polish.
First I'd like to talk about the art... there are certainly some boxes on screen... and that default unity blue background... really? But hey, I could tell what the point of everything is. The claw is a claw, the circles look like I can grab them, and I know an angry birds pig tower when I see one. And also, the visual of changing screens is pretty clean.
Next I would like to go over the audio...
Last I want to go into the actual gameplay. I think the concept of this game sounds a bit rough to implement, but you actually got it (mostly) working as intended. I do feel that the overall speed of things could have gone quicker (grabbing especially), and that it is hard to actually pull off a grab and throw successfully. But, when you do pull it off, it is satisfying to see the building fall apart.
Overall, While I think its clear this was constrained by time, its a fun little proof of concept. (As usual) I apologize if this review was a bit much, but I'm doing this to all the games from this jam as I think critiques help us grow.