Facility 1F, the first floor of the Ibis Island complex, served as the primary entrance to the research facility. The research facility's administrative offices were located on this floor, as was a lecture hall often used by Edward Kirk, the facility's lead researcher and supervisor. Despite being the most easily accessible floor of the facility, each part of the floor was heavily secured by a combination of locks, laser shutters, and DDK doors. Immediately inside the main entrance of the facility of security checkpoint, which guarded the military's strategy room, a toilet, the first floor's primary control room, and a stair leading to floor B1.

This floor served as a the center for transport throughout the facility. Immediately inside there is a secured elevator hall by a key DDK , which allowed those with the correct ID card to descend to the B1 laboratory entrance, directly to the B2 third energy Generator, and to a B3 rest station.

Several external areas were contained within the Facility F1 map. This secondary entrance to the facility was watched by a dedicated guardhouse, and was primarily used as a route to the 1F and B1 backup generators. A path to the Facility Outdoors and its Large Size Elevator also lead through this area.