This steampunk retelling of the classic Around the World in 80 Days is one of my favorite pieces of interactive fiction of all time, so much so that I almost feel it's unfair to other interactive fiction.
It's a commercial work, and worth twice what I paid for it. The polish shows: gorgeous visuals, an easy interface, and a beautiful soundtrack accompany the elegant prose.
Characters are fascinating and engaging: I wish I could abandon the main storyline to just travel with some of the many memorable people I meet, but alas, as a simple valet, I must follow my master on his quest!
I can't recommend this one highly enough. It's a brilliant mix of historical fiction with contemporary values and quality writing, and the entire package together is well-worth the price of admission.