Summary: Well-designed, difficult puzzles. Good for large, experienced groups.
Puzzles: This is one of the most puzzly and non-linear rooms I have done! This is jam-packed with difficult and very unique, multi-step puzzles. Puzzles were very heavy on the thinky side, with lots of physical interactions and group coordination.
Immersion: There's a thin story to the room involving Houdini and 8 inventors, each with their own puzzle, but the puzzles themselves were very thematic to each inventor. Tech was all automated.
Execution: Flow was mostly good and stayed non-linear up until the very end. There are 3 overarching puzzles that divide the flow into 3 parts. One downside is that you get access to all the puzzles in the beginning, but you may not have all the information you need to solve them until you advance. Another minus is that there were many different colors involved in some of the puzzles, and it was difficult to distinguish between some of them, and none of us were colorbrind.
Group size: 10 (max) moderately experienced people was a good size for us, and most people were busy the entire time, except towards the end. One downside of the large and non-parallel flow with a large group is that you probably will work on less than 25% of the puzzles. More experienced groups can probably go with 6-8, but even then you probably won't be able to work on all the puzzles.