Fallen / Brand New World immerses gamers in a co-living simulation where they share a home with Lily, a maid who is always nearby. The player interacts with her, does chores, and spends time in a bustling city. Dialogue and action choices shape the development of their relationship, from small details to intimate interactions. In Fallen / Brand New World, running a tavern is a key part of the gameplay. The gamer runs the establishment, serves customers, and keeps an eye on supplies, working together with the protagonist. Local life opens up space for exploration, where every decision affects the connection with the heroine. Everyday tasks alternate with moments that reveal her character.