MycoRelic's world and the Polestar Mushroom Temple
The store and official site place the game on islands inhabited by tribal mushroom robots, with derelict foundries to loot and ancient temples to explore. Movement copy mentions stony cliffs, burning magma, noxious mangroves and spore-riddled chasms. The 1.0 patch adds the Polestar Mushroom Temple and calls it the most difficult area in the game.
What official pages show
Steam's short description sets the scene on islands of tribal mushroom robots. Foundries and temples are the two activity types named there: foundries for parts that upgrade the robotic body, temples for forgotten elemental powers. Official screenshots show forest overlooks, terraced stone temples with green waterfalls, cliffside industrial walkways over the sea, and dark interior halls. Those images identify the look of the world; they are not a map, and this guide does not name regions that the developer has not named.
The 1.0 notes also mention teleporters, including a destination selector that now takes a single press instead of a hold, and a fix for teleporting from Polestar Island. That is the official name used for at least one island tied to the new temple. Older Early Access notes referred to other places such as a crab island; those older names are not repeated here as a current atlas, because the public 1.0 post does not republish a full island list.
Polestar Mushroom Temple
In the 11 November 2026 1.0 announcement, Sandy Dingo Games says the Polestar Mushroom Temple has been added to the world, describes it as the most difficult area, and asks players to bring their best gear. The post says the area includes a main boss and resummonable minibosses with unique items. A later patch on 12 November 2026, v1.0.631, focuses on the final boss: the developers wrote that it could be kited indefinitely, could be taunted out of a search for body parts, and felt undertuned. The patch closes those exploits, adds attacks, and raises the boss's health, damage and poise.
The 1.0 post also says achievements were added, one for each major boss and a few more “to discover yourself.” Steam now lists 12 achievements. This guide does not list hidden achievement names or boss strategies beyond what those official notes already disclose.