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This article is about the object that appears in Super Mario Galaxy 2. For the object that appears in Wario Land 4, see vortex.
“Through space and time to an unknown world we go! I'm jiggling just thinking about it! Ready, Captain?”
Lubba, Super Mario Galaxy 2
A Portal that has just been created by a Grand Star in World 3, following the defeat of Megahammer in Bowser Jr.'s Fearsome Fleet in Super Mario Galaxy 2.

A Portal[1][better source needed] is a powerful cosmic gateway found solely in Super Mario Galaxy 2. Portals are greenish-white in color, round in shape, and allow Starship Mario to transcend the boundaries between all seven worlds found in the game. A Portal is created via the power of a Grand Star. When Mario returns to Starship Mario after having defeated Bowser, Bowser Jr., or one of Bowser Jr.'s henchmen or machines in one of the six boss galaxies in the game, the Grand Star that he returns with will immediately shoot out into space directly in front of Starship Mario, and explode into a Portal. Access to the next sequential world in the game will now be granted.

A Portal as seen from the World Map of World 2

Originally, the first time a new Portal appears in the game, a short cutscene will play where Lubba talks to Mario before he pilots Starship Mario directly into the Portal, thereby advancing to the next world. After each cutscene, the Portals that are created will remain at the beginning and end of each world (with the exception of World 1 and World S, which only have Portals at the end and the beginning respectively), allowing the player to freely travel between all unlocked worlds whenever they want. Alternatively, the player could also use the Grand World Map, which, though they are not physically shown when in use, also requires the physical presence of a Portal to allow Starship Mario to travel between worlds quickly.

Names in other languages[edit]

Language Name Meaning
Japanese 次元の扉[2]
Jigen no tobira
Dimensional Door
Chinese 時空大門[3]
Shíkōng dàmén
Time Gate


A Portal as seen from Starship Mario
  • If the players go to the Starship Mario while they are in a space before the Portal to the next world, they can see the Portal floating in the sky. The same applies when Starship Mario is on a space after the Portal to the last world, but this time the Portal can be seen behind Starship Mario.