****End game / challenge spoilers below***
Awesome, thanks for the information! I've just one challenge left to do (and no hearts to do it with).
- It looks like you're right that rooms weren't spawning in 'low chance' areas. Undiscovered secret rooms sometimes cause others to spawn in 'worse' tiles otherwise they would conflict with the one neighbor rule, but this isn't always consistent: https://imgur.com/a/0MfkkFw
^It seems like starter rooms are generated first on the map, and it goes down the line? Also it seems like market rooms don't affect the spawns of any other.
- It's ambiguous whether blocked-off tiles should count when finding 'Red Secret Rooms' - it appears they do.
- The final room for the purist challenge was a repeat of the very first level, which I'm not sure is intended. I was relieved expecting a boss rush!
- It looks like no secret rooms can spawn on any of the glitch rotation tiles, which is nice because I've had rooms with 8 Angel spot candidates and that helps narrow it down.
All said, these are all very minor things in what is otherwise a game that I would highly recommend.
Potential bugs after update:
Room (5?) in a normal run started with all rooms discovered (no cheats) and no way to advance to the next room, had to restart.
If a glitch room spawns on a square that you have an x (right click) and you can remove the x but it won't let you pickaxe that square.
Red rooms weird spawning: https://imgur.com/a/eOe5CQ0
***End Spoilers***