Machine Passage (Steel Organ in Japan) is a track in Kirby Air Ride. This race course has lots of turns, just like Checker Knights, which makes the Swerve Star and Wheelie Scooter ideal machines to use for races. There is a room with plasma on the walls and floor; this is where the Plasma Wisp is prominent. Another feature is the cannon that shoots the character to the other side of the course once the player gets "outside" the tunnels of Machine Passage. An awkward thing about this course is that most, if not all of its rooms have either boosts, rails or fans, which propels the character up in the air. The outside of the Machine Passage closely resembles that of the board of the Halberd. Also, there are containment tubes containing three-eyed blobish creatures.