With little more than a few teasers released to the public, it's quite unclear what kind of game Mass Effect 4 will be. There's plenty of fair speculation to be had regarding the return of various Mass Effect lore elements and characters, but aside from the return of Liara T'Soni and the Milky Way galaxy, nothing has been confirmed. However, it's safe to assume that the game will stick to its RPG roots, including genre staples like dialog trees, character leveling, and classes.