Quoted from lpeters82:
Cosmetically you can do whatever, but based on what's on this version of the playfield the spinner charges up the "portal" which is used to change dimensions with a shot to the garage. Based on the video from Charlie you can change dimensions even when you are in a mode, so to me the garage is the portal. The center shot is the ship which seems to be used to start the adventure modes. Either way, a portal mod would likely need to tap into the top light on the "Charge Level" or the green piece on the toy portal gun -- voiding your warranty.
PS: I hope they can get creative with the scoring for the dimensions, so there isn't a cookie cutter way to play the game.
spookycharlie and his team interact and listen with fans, there may be opportunities to continuously add dimensions with fun and creative rules. So many permutations with lighting (colors, brightness, movement, flashing), scoring (multipliers/dividers), unique playfield elements (loop or main bumper), combo opportunities.
-Imagine a water world where all lights pulsates blue and cyan and you have to stay alive by hitting switch within 10 seconds to breath while the center top counter counts down your oxygen.... All the while trying to charge the spinner to activate the portal so you can escape to the next dimension.
-Or screaming sun dimension where the playfield is completely dark for one minute, and gradually illuminates the playfield yellow from left to right for another minute while the sun rises and sets over 2-minute days.
-Or a heavy gravity dimension where flipper strength is weakened until you can activate a Meeseeks.
-Or a Cronenberg dimensions with sci-fi green GI, and shots that can only be made once before red-ing out with a Cronenberg creature until all shots are made (similar to Final Battle on Shadow)
- You could even have a portal chase, where you have to hit the portal many times to escape Gromflomites.
I'm sure many here could think of much better ideas!