Ruins is a Master Hero Mode X map that is set in a derelict neighborhood with several buildings, rooftops and back alleys, most of it in a rough shape. There is a portal at the north building that leads people entering it at one of three possible place on the map.
- CF China: Lost Border Town.
- CF West: Bronx.
- Although this is the fourth Master Hero Mode X map, it is the first original map for that mode, since Dawn Village, New Lost City and New Resort were expanded versions of existing maps.