Wow, really nice, looks and feels very polished. You could also call it the controller killer as i smashed my controllers multiple times while rewinding xD would be a fun addition for the future where you could overcrank the figures or somehow change the crank-physics.
really like that take on tower defense where you still are active. also really nice use of the motion controls of XR.
If i am really really nitpicking: The Coins into the slot gets slightly annoying after a while, maybe you could implement a version where you can select multiple coins via joystick and put them in the slot?
Also just fyi: i testet on a quest 3. after rount 5 or so the framerate dropped bit by bit. i guess thats not a problem on PC but for quest there might have been to many models at the some time during a round. felt like 30-40 frames in the end.