This is a great one-room puzzle game in the same vein as The Wand or Lord Bellwater's Secret.
You are placed in a room and tasked with finding a certain word. This is quite a difficult task. The room is split up into 9 different sub-locations, each with puzzles, usually several puzzles. There are experimentation puzzles, intuition puzzles, red herrings, crossword-style puzzles, math puzzles, etc.
I was able to solve it without hints, but I think I played it once 8 years ago, and it gave me a hint on a particularly tricky problem.
About half of my playtime was just going to each of the 9 sections of the room and examining everything. The other half was putting the clues together.