Quoted from Diospinball:
Never heard of that game before. Looks to be a weird, but fun game... Going to add it to my list of games to play. And its always a fun day when I learn of a new arcade game. New for me... But, you all know what I mean.
I really enjoyed your list. DD1 is my favorite arcade game and the first dedicated arcade machine I bought for my game room. I also have a dedicated DD2 in my game room (but the NES DD2 was actually better).
Zookeeper is easy to play tough to master. Has a “one more game quality”. Watch a good player on YouTube to get the rough strategy down. Then have at it.