Engine Room

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This article is about the dome seen in Super Mario Galaxy. For Luigi's home board in Mario Party, see Luigi's Engine Room. For the engine room in Starship Mario, see Starship Mario § Engine Room.
“It might get a little rough from here on out, but just do your best and you'll be OK!”
Gearmo, Super Mario Galaxy
Engine Room
SMG Engine Room Exterior.png
Screenshot of the Engine Room's exterior.
Appearance Super Mario Galaxy
Super Mario 3D All-Stars
Levels 6 (inc. Hungry Luma galaxy)
<< List of worlds >>

The Engine Room is a dome in Super Mario Galaxy. It is the fifth accessible dome, and will be unlocked whenever Mario or Luigi recovers the Grand Star from Bowser's Dark Matter Plant.

From the exterior, the Engine Room looks simply like a large metal dome, while inside there are purple and blue pipes leading up from a steel mesh floor. A Gearmo patrols the room, although he serves no real significance. As with all domes, the Engine Room has a Pull Star in the center, which is used to access the dome's Galaxies. Mario does not need to enter the Engine Room in order to reach Bowser's Galaxy Reactor, as he can just collect the sixty Power Stars required to access it from previous galaxies.

The main boss of the Engine Room is a more powerful version of King Kaliente.


Engine Room.png
Inside the Engine Room.
SMG Engine Room Overview.png
The Engine Room galaxies.
SMG Engine Room Dome Model.png
Galaxy Description Number of Star(s) Unlocking criterion
SMG Screenshot Gold Leaf Galaxy (Star Bunnies on the Hunt).png
Gold Leaf Galaxy
This Galaxy is essentially a mirror of the Honeyhive Galaxy, set in autumn and with minor changes. Bees, Star Bunnies, and Cataquacks can be found here, as well as the Undergrunt Gunner boss. Smg icon powerstar.pngSmg icon powerstar.png
Smg icon powerstar.pngSmg icon cosmiccomet.png
Smg icon purplecomet.pngSmg icon powerstar.png
Collect 34 Stars and finish Bowser's Dark Matter Plant.
SMG Screenshot Sea Slide Galaxy (The Silver Stars of Sea Slide).png
Sea Slide Galaxy
This is a beach-themed Galaxy that consists of a ring of water encircling an oblong central planet. It is inhabited by penguins and the orca whale Guppy. Smg icon powerstar.pngSmg icon powerstar.png
Smg icon powerstar.pngSmg icon cosmiccomet.png
Smg icon purplecomet.pngSmg icon powerstar.png
Collect 36 Stars.
SMG Screenshot Toy Time Galaxy (Mario Meets Mario).png
Toy Time Galaxy
This playroom-themed Galaxy has many colorful planets and gigantic toys, as well as sweets, as shown in its third mission. Gearmos can be found here. Smg icon powerstar.pngSmg icon powerstar.png
Smg icon powerstar.pngSmg icon fastfoecomet.png
Smg icon purplecomet.pngSmg icon powerstar.png
Collect 40 Stars.
SMG Kingfin Planet Overview.png
Bonefin Galaxy
This Galaxy consists of one planet that is a sphere of water surrounded by a black shell. It is home to Kingfin, a skeletal shark that is the Galaxy's boss. Smg icon powerstar.png Collect 55 stars and finish Giant Eel Outbreak.
SMG Screenshot Bowser Jr.'s Lava Reactor (King Kaliente's Spicy Return).png
Bowser Jr.'s Lava Reactor
The Engine Room's boss battle takes place in this Galaxy. It contains a large planet made of lava, in which lives King Kaliente (summoned by Bowser Jr.), who the player must battle a second time. Smg icon grandstar.png Collect 45 Stars.
SMG Screenshot Sand Spiral Galaxy (Choosing a Favorite Snack).png
Sand Spiral Galaxy
This Hungry Luma Galaxy features a large tube-shaped planet full of flowing quicksand, which the player must choose either the Bee Mushroom or the Boo Mushroom to traverse. Behind it is a small, bright moon with platforms revolving swiftly around it. Smg icon powerstar.png Complete Faster Than a Speeding Penguin, Luigi and the Haunted Mansion, and then feed the Hungry Luma 1000 Star Bits.

Names in other languages[edit]

Language Name Meaning
Japanese マシンルーム
Mashin rūmu
Machine room
Spanish (NOA) Sala de Máquinas Machine room
Spanish (NOE) Sala de máquinas Machine room
French (NOA) Salle des Machines Machine room
French (NOE) Salle des machines Machine room
German Maschinenraum Machine Room
Italian Sala motori Machine room
Korean 머신룸
Meosin rum
Machine room
Chinese 机械屋
Jīxiè Wū
Machine room


  • The Engine Room is the only dome in the game where a NPC other than Polari can be seen.
  • It is possible to gain access to the exterior of the Engine Room before completing Bowser's Dark Matter Plant by using the slope climbing glitch on the sloped roof of the Comet Observatory. As a result, the Warp Pad on the upper floor that connects to the Warp Pad next to the couch on the lower floor can be activated even before the Engine Room has been unlocked, allowing permanent access to the upper floor.