The Lucky 38 basement is the basement in the Lucky 38 Casino in 2281. Here, Mr. House (or Yes Man, if the Courier chooses to take over New Vegas), demonstrates the abilities of the Securitron MKII units to the Courier.
The basement contains a large firing range. The Courier stands behind a barrier on a viewing platform while two Securitrons stand below. There are no entrances or exits accessible by the player character, and the area can only be visited once. There is a 9mm submachine gun in full condition on the table by the entrance, next to a 9mm pistol which is also in full condition. There is a pair of binoculars on a table on the viewing platform.
- The terminal that can be seen but not accessed across the room has a status message for the Lucky 38's main reactor. At the time of watching the Securitron demonstration, it states the reactor is offline. If the Courier turns the reactor on by completing Wild Card: Finishing Touches or The House Always Wins VII, the terminal will be blank.
- If the energy barrier/wall is hit with a power fist, blood spatters will appear.
- The special power of the sonic emitter does not affect the energy barrier.
The Lucky 38 basement appears only in Fallout: New Vegas.