Thanks all.
I went with the tower lying on its side mostly intact so they could do a Poseidon Adventure walking on walls and scrambling over ceilings as they search for the android brain. The artificer robot PC has levitate rocket boots so maneuvering is cumbersome but doable on a continuous basis unlike the aasimar's 1/day for a minute angel wings.
I am liking the inertial damper device as a possible explanation they might or might not stumble upon.
I got to use the same maps, I gave inspiration to the PC who said "So its now a sidescroller view instead of top down one" which got everybody to conceptualize the new Fantasy Grounds map orientation instantly. This also tied into something I had mentioned earlier referencing the Netflix anime's Castlevania teleporting tech castle.
One room they came to had a write up of a summoning chamber with a magic circle containing a fly daemon that had been confined for years. Since they tumbled the tower and every room has things thrown around now something scuffed the circle, so it was now an unconfined fly demon (I used a 5e chasme fly demon with double hp as a close enough on-the-fly replacement for the Pathfinder fly leukeodaemon).