48 in my first game, then 81 in my second!
I've come up with a technique that works when the going gets tough: since you're not penalized for missing crates, when there's a cat on the conveyor belt, I keep it in my hand and wait for the truck without breaking any crates. Then I break crates again while waiting for the next cat. But after a while, the game was going so fast that I didn't even manage to catch the cat coming out of the crate I'd just broken XD!
In any case, I had a lot of fun, the sound and visual ambience was very nice, and the story of cat's in the middle of the weapons factory made me laugh a lot. Well done!