I'm making my own arcade and it'll have Do Don Pachi!
There's a game I wanted to recommend in the D's ... Dead Connection.
It was never released in the U.S. as far as I know. It's a an awesome game. Basically it puts you on a static playfield, and you have to kill enemies. Not too complex a concept, but the terrain is interactive!!!! It's got a gangster theme from the 1930s or possibly 1940s.
I found this while Keranu and I were goofing around one night trying to find Blood Bros. (we couldn't remember the name, so I was trying random games)