A bit, yeah. I like to describe it as a "collection of erotica", but in a book format it wouldn't be possible to do the sort of customizations for each player's kinks that we do here. There wouldn't be music either, and I think the UI adds a lot to the atmosphere.
So, yeah! It is a bit of book. If that's not up your alley you might want to check out my team's other games. Minotaur Hotel has the most game-like elements to it.