Wacky theme, but why not? It's nice to see something unusual. Interesting use of the barrels.
The detailed visual of the ball clashes somewhat with the more cartoony graphics of the barrels and background. I think more realistic assets would have been more suitable, just for the sake of consistency.
I don't think we really need a full 3-second respawn timer, especially considering how often the player loses. (I made exactly the same mistake in my game too. :) )