I bought this as I have two of the other Glass Masquerades. It's the same relaxing, chill puzzle action so if you liked the other two you'll like this with one caveat.
If you have a clown phobia, especially creepy clowns, you will probably not enjoy this! And there is one in particular I found pretty disturbing. The vibe is much darker throughoput.
There is little comments/quotes attached to the puzzles once you complete them, some quite philosophical.

Isn't as good as the first or the 3rd game in the series