Cairn was one of 2026’s first sleeper hits. While we were expecting to like it, even our reviewer was pleasantly surprised by how hard it hit, and it’s one of Metacritic’s top 20 highest rated games of the year at the time of writing. Naturally, DLC for a game like that would be an easy sell, but in this case, it’s not a “sell” at all – On The Trail: Deep Water, Cairn’s first DLC pack, is dropping for free…