Complex sentence: The second round featured the Slime Tour, later renamed Field Games, which was footage shot at another location elsewhere in Canada; in its first season, the Slime Tour was mainly in Yukon.
Split into simpler sentences: The second round features the Slime Tour (renamed Field Games for the final season), which features a footage shot at another location elsewhere across Canada. In its first season, the Slime Tour was mainly in Yukon.