Flying Dutchman: All the main characters; additionally, the actual Flying Dutchman and Wandering Jew are minor characters.
Game Tropes: This book contains many examples, most notably War Gaming and chance games.
Genre Savvy: Adam, and to a lesser extent Helen: "I am a cleric and magic user."
Happiness in Slavery: Joris is Type I of this - although he hated the concept of being a slave, Konstam treated him very well, and Joris liked working for him. Turns out Joris' owners hated slavery and were planning to free him as soon as they could.