For those of you who are new to the game, Atomfall is an action-survival mystery set in the UK. The story takes place five years after the real-life events of the 1957 Windscale Disaster in the North of England. In the world of Atomfall, a quarantine zone has been established around the Atom Plant and no one has been allowed in or out for five years. Life and society have changed and adapted under these trying circumstances and gangs of strange folk now wander the countryside.

You wake up in a bunker with no idea who you are or how you got there. Given the circumstances you have little choice but to set out on a journey to discover what really happened at Windscale and maybe try to find out who you are in the process. The Wicked Isle expansion adds a whole new location, with its own set of characters and enemies as well as additional leads, weapons, skills, items and multiple new endings for the main game.