Crashed UFO


 * Alien Ship, a crashed alien craft in a special encounter in Fallout.
 * Flying saucer, an alien ship that was captured by humans then re-captured by aliens, crashed and found in the Alien Ship special encounter in Fallout.
 * Unidentified Flying Debris or "Firelance event", a random encounter in which a UFO explodes overhead leaving behind the Firelance and some alien power cells, in Fallout 3.
 * Alien crash site, the crash sight of recon craft Theta and launch point for the Mothership Zeta add-on in Fallout 3
 * Hovering alien ship, an extraterrestrial landing zone north of Horowitz Farmstead, complete with spacecraft and three aliens, encountered if the Courier has the Wild Wasteland trait in Fallout: New Vegas.