A world based on LNA's Cyberplexus, the Vault is an ancient computer mainframe, where strange and powerful ancient technology allows minifigures to actually journey inside. It appears to have been built as a vault to store threats. There are many bonus rooms, full of evil ancient creatures and viruses. Whoever built it is long gone. A portal has shown where they may have went: a dark, horrific place known as Conruptos Mountain.
The most dangerous area is the Recycling Bin, in which everything is periodically deleted, allowing the player to stay in for only a limited time.