Are stairs constructible or destructible?
ideally yes, although for balance reasons it might be a good idea to make the roundstart stairs incredibly tough and only let people build weaker ones, which might also lead to fun shenanigans like assistants building shitty wooden stepladders to try to get into security's attic
What about blob placement? Can you use the "go up/down" verbs to move as Bob overmind?
restricting blob to one z-level doesnt sound very fun but for balancing maybe give them a dedicated blob structure like a blob pillar or something that they need to use to bridge upstairs/downstairs, so the crew fighting them can immediately tell where the blob is attacking from
also dont let node influence spread across z levels so the blob cant sustain a mass with a node upstairs
And revs (or heads in a rev round) ? Do they lose upon changing zlevels on-station?
no, it's still part of the station
And teslas/singulos? Can they change levels?
the best way to handle this imo would be to have a loose tesla/singulo on one level spawn an identical one on the other level and have them mirror each others states/movements, to give the impression they're so big they transcend z-levels, but i feel like that might be a coding nightmare
they should definitely affect other z levels, maybe have an overlay show where they are so that if a singulo is above you you arent getting obliterated by an invisible succhole
Do explosions affect the upper level?
again i think the most interesting way to handle this would be to simulate explosions having a spherical influence by spawning an smaller bomb on adjacent z-levels
if someone sets off a 100u meth bomb downstairs, spawn a 50u meth bomb explosion upstairs, to give the impression that the blast was farther away
And the atmosphere?
obviously yes, gas should escape/flow into holes in the ceiling/roof, but i have no idea how much of a nightmare or nonissue coding that would be
Can you draw cult runes upstairs?
same rules as the 'normal' z level, ie any rooms a rune is valid should be valid on either z level, although this can be changed depending on balance
