Great idea to continue improving the Firehouse!  See attached for an updated wiring diagram, showing where the vertical power connectors would go.  I think you'd just need one additional A4 board for the 2nd floor-- I'm not sure if the wire on the vertical connector is long enough to reach down to the A4 board under the 2nd floor.  It may be, or you may need an additional A4 board.

For the video game, to get it as small as the one in the kit, the only way is to use our pre-made video game unit: https://www.brickstuff.com/store/p142/%2A%2A%2APRE-ORDER%2A%2A%2A_Classic_Arcade_Console_With_32_Game_Animations.html.  That unit has a screen that is smaller than our 0.96" screen, which is what you need if you want to fit things into a 2-wide space.

The smaller screen is mounted inside the pre-assembled game, but it is possible to take the build apart and remove the screen.  You could then see if it was possible to mount it into some variation of the GBHQ video game-- if not, you could always just use the pre-built unit.

I hope this makes sense-- let me know if you have any additional questions.  Thank you!

Freakmaster For the video game, we're looking at potentially making a custom video game replacement with our screen inside-- if we did that, it could connect to the same plug as the flashing LED that we include with the kit now.  So instead of plugging in the flashing LED, you'd plug in the complete videogame.  Again, this something we're looking at but haven't finalized yet-- the videogame housing would need to be re-designed to fit the screen.

Freakmaster I'm back in the office this week so I'll have a look at the arcade game today and let you know if we will need to supply special parts or if the arcade kit can be made to work.

Freakmaster Well, some good news to report.  We were able to fit the video screen into a modified version of the GBHQ video game console.  Check it out:

Here's a quick demo:

Price would be $74.99 for the game (including LEGO parts-- the game would be pre-assembled).

Is this what you had in mind?  We can start making them if you'd be interested in buying one.

Freakmaster Nice!  It looks really good.  I'm not surprised about the issued with the battery pack: now that you have the videogame in there also, there is a bit more power consumed by the entire setup than the battery pack can provide.  All works though when you have it on the stronger power supply?

Freakmaster Another good idea!  let me take a look at the setup and I'll let you know.

Freakmaster Not yet, because after looking at it again, it would require a new design for the power connectors.  Right now they are vertical, but here they would need to be mounted horizontally.  We are looking at some other potential parts/designs for new types of connectors that may work here, but we won't have samples until late summer.

Freakmaster That is just a switch-- it does not transmit power.  You could use it as a switch, yes, but you'd still need to run power from one half of the building to the other.  There would also be the issue of keeping the section open-- without a magnet to hold it open (the magnet in ACORN05 is just a switch, not a force-holding magnet), I don't think the section would stay open enough to keep the switch on.

Freakmaster As always, great suggestion.  We do have a little effect controller with 4 outputs.  I could imagine doing a sequence where the ghost would light up/pulse, then the blasters would kick in as the ghost trap lit up, then the ghost and blasters could turn off, leaving just a pulsing ghost trap.

It's possible to do-- just have to find the time.  We're very backed up at the moment, unfortunately!

Looks great!  As we discussed offline, we're hoping to have a revision to our Ecto-1 kit coming soon that will make your display even better!