The Sunken Kingdom is a fairly small expansion for the Strange Brigade, and while it doesn't exactly bring a whole compendium of new mechanics and adventures into play, it serves as a strong continuation of all the things I enjoyed about the original Strange Brigade campaign. Players get a chance to explore a beautiful and fun mission, all in the shoes of a brand new character. The DLC also brings some new weapons, equipment, and amulet powers to the playing field, giving players some room to experiment with different combinations. In addition the DLC, Rebellion has done a great job of periodically adding new (and free) content to keep players entertained, so there's no reason to expect them to stop now.