Frosthaven is the story of a small outpost far north of the capital White Oak, an outpost that barely survives the harsh weather and invasions of known and unknown forces. There, a group of mercenaries will help bring this settlement back from the brink of destruction. Not only do they have to deal with the harsh elements, but there are other, much more dangerous threats in the brutal cold.

There are Algox, the larger, yeti-like cousins ​​of the Inox, who attack from the mountains; Lurkers streaming in from the northern sea; and rumors of machines roaming the frozen wastelands of their own free will. The band of mercenaries must face all these dangers, perhaps making peace with these new races so they can work together against even more sinister forces.

Frosthaven is a standalone adventure from the designer and publisher of Gloomhaven that features sixteen new characters, three new races, over twenty new enemies, over a hundred new items, and a new campaign with 100 scenarios. Characters and items from Gloomhaven can be used in Frosthaven and vice versa.

Not only does Frosthaven have the familiar combat mechanics of Gloomhaven, but there's plenty more to do outside of combat, like tons of mysteries to solve, a seasonal event system, and player control over how this ramshackle village expands, with each new building opening up new ways offers to make progress.

Frosthaven has a brand new set of items, but there is a mechanism to transfer items from 'Gloomhaven'. However, because it is a remote location, these products are imported and are not there as standard. Resources are much more valuable and you have to build items through a crafting system instead of just buying them.