Sea of Stars has a lot of NPCs in the world that players can interact with, shop from, and play Wheels with. Wheels is a popular game in the game's universe, and there are loads of people around that are very good at it. Some fans of Sea of Stars claim Wheels is one of the game's best features. There are a grand total of eight Wheels Champions that must be defeated in this chess-like game before players will be able to take on the final boss of Wheels: the Watchmaker himself.