[POV: KiRA.]
The 3rd floor had always stood out to me every time I played the game from scratch.
Even the Tower of Beginning was a perpetually evolving place where many of the things weren't the same between the different runs.
Of the various runs that I had in that tower, I learned how there was 'randomness' in various floors and their hidden pieces as well as the common elements.
Sometimes it was the item drops, sometimes it was about their locations, how we find the place, how some of the things work, while sometimes there was no visible difference in certain floors.
'If someone played the game as much as I did, they would notice even the subtle changes within the scenarios at a glance.'
But that's where the 3rd floor was different each and every time.
When we were in the game, the element of randomness wasn't as prominent on this floor as it was on the other floors.
