For this purpose, the scene was rebuilt on the Source game engine.[26] Firewatch was made compatible with PlayStation 4 Pro on its November 10 launch, with enhanced performance through 4K resolution and high-dynamic-range imaging.[27] The free roam mode was enabled for PlayStation 4 Pro and Steam shortly thereafter.[28][29] Partnering with Limited Run Games, Campo Santo distributed under ten thousand physical copies of the game on PlayStation 4.[30][31] 4,800 copies were made available for order on the Limited Run Games website on December 16, 2016, while 2,500 were sold through the Campo Santo online store starting January 16, 2017.[32] In April 2018, Campo Santo announced the game will be released for Nintendo Switch later in the year. It was later clarified the Nintendo Switch port is a heavily optimised version of the game, and the update will also be available for other platforms. Additionally, the Nintendo Switch version features some exclusive elements.[33] Campo Santo later confirmed, via Twitter, the worldwide release date for the Nintendo Switch port as December 17, 2018.[34]