The Riftbreaker: Metal Terror is a decent DLC expansion that, while it doesn't change much regarding the main gameplay loop, more than makes up for it with its vast array of new weapons, buildings, and an intriguing story surrounding an ancient civilization. The game has also upped its enemy variety, allowing players to be more creative with their arsenal while putting their management skills to the test. Unfortunately, it also won't really change your mind if you weren't attracted to the game the first time.