You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Museum of the Game® & International Arcade Museum® Forums
Looks like a Dig Dug style cab; same profile but different coin door. Also looks like single joy originally.
Converted to a Tetris with sides painted over blue (thick and not a pro job) and Tetris art applied, so no luck there.. None of the original interior wiring was left at all, just the coin box.
So - what was this game originally? With the quality of the sides, I'd be shocked if it was a factory conversion.