Undeniable Flying Object

Undeniable Flying Object is the fifteenth mission available in single player Octo Valley. It takes place in a modified version of Bluefin Depot, a multiplayer stage.

Trivia

 * At the end of, after the Octostriker has been defeated, some unusual sounds can be heard: an erratic clanking and a faint moan, which are slightly louder towards the edge of the UFO. These sounds are not heard in any of the other UFO-based missions, and neither are they heard when standing on the UFO to Enter the Octobot King!. While their source is unknown, they may be the result of paranormal happenings, given Callie's comments about ghosts at Bluefin Depot.