Explore a massive concrete skyscraper named "The Oldest House" with your trusty Service Weapon in hand, a shape-shifting weapon with supernatural abilities. This ever-changing, enormous environment is much larger on the inside than it appears from the outside and filled with complex secrets.

The secrets are everywhere in this unpredictable environment, collaborate with other Bureau agents to decode strange puzzles and shed light on the strange experiments taking place in the massive building of New York.