The greatest giant rocks rolling through historical/artistic ages tower defense game is back with Rock of Ages 2: Bigger & Boulder. Just like the title says, Bigger &Boulder cranks up the surrealism and gameplay to be, well BIGGER AND BOULDER. With an emphasis on the chaotic new multiplayer for up to four rock-rollers, new time periods, and improved graphics, physics, and destructibility powered by Unreal Engine 4, players will need to be ready for some intense rocking and rolling.