Very nice collection man. I really like the arcade1up cabinets. It's a great way to recreate that arcade look and feel without having to spend an arm and a leg. Check mine out if you're interested. Leave a comment I like hearing feedback from people that have set ups like mine.
I've been playing games for years and that Space Invaders cabinet looks like trash. No offense. First, the original Space Invaders did not have a joystick. There was a left or right button, and a fire button (besides a player 1 or 2 buttons depending on how many coins you inserted). And there was a panel in the front to give it some depth. The screen itself had some kind of overlay so the bottom remained green, the middle where all the aliens first appeared were white, and anything that appeared on top was red, such as the U.F.O.