Is There an Alternate Version of Missile Command?

i saw missile command on display at a portland retro gaming exbo a few years ago. There was an alternate cabinet there that was designed in the style of the sit down cabinets, which at one six scale is not really feasible. And it does get into something you've been doing increasingly with your releases. i would love to hear more about kind of how h the o te idea came around to offering these alternate versions.