It is the home of the Eta Psi Epsilon Tau Greek Society (Etpets for short), who was devoted to advancing the understanding of chemistry and maintaining its position as the resident geniuses of Vault-Tec University. Eta Psi members were expected to maintain a minimum average GPA of 3.85, be involved in community outreach, and be kind and helpful towards one another. They were also forbidden from hazing. Their pledge guidelines were a stark contrast to the neighboring Pi Kappa Mu fraternity.
Their society was catapulted to prominence among the students when one of their members, Lewis, needed money to rent a space that could house his obsessive collection of Nuka-Cola memorabilia. To obtain the funds, Lewis developed a high-proof distilled spirit with Nuka-Cola called Nukashine, correctly identifying that university students loved alcohol and that they were plentiful on campus. Nukashine was such a success that it even led to the creation of a namesake speakeasy in the cellar of Big Al's Tattoo Parlor.
The Eta Psi House is a two-story house with a basement located in Morgantown's Fraternity Row. Entry to the house is via the building's basement, through a door near the laundry area. In the basement is an Eta Psi Protectron who is still operational. The basement is set up like a makeshift distillery, with a brewing station and chemistry station. Lewis' bedroom is also in the basement, behind a door with an "Employees Only" sign. His room is a shrine to Nuka-Cola with a wallpaper made of pictures of Bottle and Cappy. On his shelves are souvenirs presumably purchased from Nuka-World including several rare Nuka-Cola variants.
The first floor contains a living area and kitchen. Party hats and blue plastic cups are evidence of a party that took place sometime before the bombs fell. There is another Eta Psi Protectron here. A chessboard with many robot parts models which serve as pieces sits in the corner of the room. The second floor contains a pledge bedroom with bunk beds and Judy's bedroom containing her terminal. All the Don't Be Bored Games Company's board games can be found in the building.
- We need to talk - Note, pinned beside the door to the ground floor bedroom.
- Lewis's personal log - Holotape, in the ground floor bedroom of the house, beside a Nuka-Cola shaped lamp.
- Distillery supply password - Given after reading a terminal entry on Judy's terminal.
- Potential Vault-Tec bobblehead - To the right of Judy's terminal inside a bedroom.
- Potential magazine - On the shelf next to the shower inside the bathroom in the basement.
Behind the scenes
Chemical compounds written on chalkboards in Eta Psi House include ethanol (C2H5OH), carbonic acid (H2CO3), uranium hexafluoride (F6U), and caffeine (C8H10N4O2).