This is my favorite IF of all time.
Much of the gameplay involves converting objects from one thing to another by altering their spelling. That sounds odd outside of a text-based game, but in this setting it works brilliantly.
Structurally, the game is the type where you wander around an area collecting things and solving puzzles that may require pieces from distant parts of the game world. But with the way this game works, the key to solving puzzles requires a lot of creativity and word-play.
The game provides many hours of gameplay. It took me several days. For the most part, the puzzles were the right level of challenge to make for fun gameplay, but I did use a walkthrough a few times when I got stuck.