This game is classic Ryan Veeder: smooth implementation and rich settings, a linear story with some tension balanced with down-to-earth humor.
You play as someone who is, in fact, mildly obsessed with climbing to the top of a tower. The tower is described in rich detail.
The game contains a sub-game that is also quite enjoyable, and which uses changes in text over time in a brilliant way.
If you like Ryan Veeder's other games, you'll like this one, and vice versa.