That’s wonderful, Aura! The teleporting floor switch that only activates w/ token is a very simple solution that hadn’t even occured to me!
Honestly what I was trying to suggest was option 3, because I assumed that the original post was trying to make a game that started in some Spaceship in a “Hub” type area, with multiple doors branching from there that unlocked depending on their choices. I guess I took for granted the “same room” assumption that I’d made even though the original poster didn’t really specify…actually re-reading there is quite a bit unspecified. Although I admit I didn’t realize that you could simply have the tile in front of the door create dialogue and that said dialogue was enough to bar your progress, it makes sense though.