Sanctum 2

Sanctum 2 takes place in the future on the planet Loek-III where a major human colony has been established by the Britech Foundation in the city of Elysion-1, a vast elegant metropolis. A previous arboreal settlement, Brightholme, had been set up in the wilderness but had collapsed from repeated attacks by the Lumes, a race of diverse creatures native to the planet. It is hinted that some settlers still survive in the ruins of Brightholme and are part of an obscure organisation known as Tsygan, which is opposed to the vast, almost governmental power that Britech holds. Tsygan is a minority compared to the "Brightsiders" – those who side with Britech.

Key to the colonies' survival are Cores, which appear as large blue spheres of energy. They convert inert gases like nitrogen into oxygen, and cleanse areas of toxic mushroom-like spores native to Loek-III, which are linked to Lume activity.

Sanctum 2 received mostly positive reviews from critics. The game holds an aggregated Metacritic score of 77/100 for Microsoft Windows, based on 28 critic reviews, and for Xbox 360, based on 12 critic reviews.