Like books based on movies, TV shows, and other games, the novels based on the Halo games do their best to feel like they fit in with the shooters that inspired them. But with his new novel Halo Envoy (trade paperback, mass market paperback, digital) — in which a civil war between the Sangheili threatens the peace on a world where they and human colonists are trying to make a new life for themselves — writer Tobias S Buckell has actually come up with a story that doesn’t just compliment the Halo games, it could work as a game as well.