Sakhalin is a recently released Fallout 4 mod focused entirely on delivering new content. It was made by developer NowSky in one month as a side project; the team previously created the Gothic Orpheus mod for The Elder Scrolls V: Skyrim, as well as 20 Mount and Blade: Warband custom maps and an expansion. They're now working on a brand new standalone open world game called Trail of Ayash, focused on the native American people.

　　Sakhalin, on the other hand, is set in an alternate Fallout universe as described below. It packs a new island, new quests, factions, monsters and even new interiors. In order to access it, you'll need all Fallout 4 DLCs installed; once in the game, head to the Soviet Port located in the southeastern part of the Commonwealth map.

　　Welcome to Sakhalin Island, vault dwellers. Brought to you by the creators of Gothic: Orpheus mod for Skyrim and the upcoming game Trails of Ayash. In an alternate future of the Fallout universe after a devastating nuclear war, remnants of Communist China, The USSR, Imperial Japan and Nazi Germany have been fighting over the bones of Sakhalin Island for many generations. Forgetting anything else but everlasting war over an irradiated hell-scape. This moody horror based Fallout mod will take you through a hand crafted adventure on an island filled with conflict and intrigue. Fight back against your enemies and perhaps put an end to this everlasting conflict. If you liked the New Vegas DLC, The Divide or the atmospheric environments of S.T.A.L.K.E.R You will be right at home here. We're keeping some things under wraps for now to show off when they're ready. We look forward to showing you more in the future. Have fun surviving the future in Fallout: Sakhalin.

　　You can download the mod from Nexus if you're a PC user. Xbox One users can also play Sakhalin, though the creators said they had to compress and resize some textures to make it work on Microsoft's console. There doesn't seem to be a PlayStation 4 version, however.