Just went to the 13th floor for the first time tonight (Oct 2026) and have to say I was very impressed. The house was huge, they really used the space they had and they made very detailed sets that spanned several location types.
Along with all that, they had a lot of scare actors spread through the whole house and had some very creative effects and scenes.
I've been going to Orlando for Halloween Horror Nights for years, and 13th floor is the first house I've been in that can actually compete on their level (if not surpass it in some aspects).
Definitely one of the better haunted houses to visit in the Chicago area.