- This article is about the dimension in Super Mario Bros. 2. For the location in Super Smash Bros. Brawl, see List of The Subspace Emissary stages § Subspace.
Subspace, alternatively spelled Sub-space or Sub-Space, also known as the Hidden World, and misspelled as Sup-Space on one occasion, is an alternate dimension to Subcon in Super Mario Bros. 2. In Subspace, the terrain is dark and mirrored on a single screen, which the player cannot travel beyond. Subspace can only be accessed by use of the Magical Potions (which create doors leading to the land) in Super Mario Bros. 2.
When Mario or his friends enter Subspace, they only have a few seconds to get the Mushroom that may or may not appear; it depends on where in Subspace the hero has entered. In Subspace, all items found in any available red grass are transformed into coins when the player plucks them, giving the heroes a chance of earning extra lives in the slot machine Bonus Chance at the level's end, though they can only do this for the first two visits (any still-standing grass tufts give unripe vegetables afterwards). Depending on the area, players can also collect cherries, Starmen, and POWs. Cherries and POWs do not vanish upon returning to the main level, allowing one to effectively collect/use them twice.
Within this zone, a few jars contain a Subspace Warp that immediately allows the player to skip to another world, like a Warp Zone. In BS Super Mario USA, entering any jar in Subspace sends the player directly to Wart's chamber.
There are no enemies, but Phanto can follow the player into Subspace if they were holding the key. The player can still die by falling into a pit or drowning in quicksand. However, doing so will allow another chance to gain coins.
Names in other languages
Zona d'ombra (The Super Mario Bros. Super Show!)
- With the exception of the original Yume Kōjō: Doki Doki Panic, the music playing here is an arrangement of the overworld theme from Super Mario Bros.
- Super Mario Advance English instruction booklet, page 29.
- M. Arakawa. Super Mario All-Stars Player's Guide. Pages 87-88.
- Super Mario Bros. 2 NES instruction booklet, pages 19 and 20.
- Nintendo Power Volume 1, page 10.
- Nintendo Power Volume 2, page 43.
- M. Arakawa. NES Game Atlas. Pages 13, 16, and 21.
- Super Mario Bros. 2 Inside Out, Part I. Page 6.
- M. Arakawa. NES Game Atlas. Page 18.
- Farkas, Bart G. Super Mario Advance Official Pocket Guide. Page 105.
- Yume Kōjō: Doki Doki Panic instruction booklet, pages 21 and 26.
- iQue's promotional demo play videos of Super Mario Advance and Wario Land 4. Retrieved February 9, 2020.
- Club Nintendo (Netherlands) Classic, page 31.
- Super Mario Bros. 2 instruction booklet, page 21.
- Super Mario All-Stars instruction booklet, page 21.
- Super Mario Advance European instruction booklet, page 51.
- Super Mario Advance European instruction booklet, page 31.
- Super Mario Advance European instruction booklet, page 111.
- Super Mario Advance European instruction booklet, page 91.