Editing Subspace

[[File:Subspace SMB2.png|thumb|[[Princess Peach|Princess Toadstool]] in Subspace from the [[Nintendo Entertainment System|NES]] version of the game]]

'''Subspace''',<ref>''Super Mario Advance'' English instruction booklet, page 29.</ref> alternatively spelled '''Sub-space'''<ref>M. Arakawa. ''Super Mario All-Stars'' Player's Guide. Pages 87-88.</ref><ref>''Super Mario Bros. 2'' NES instruction booklet, pages 19 and 20.</ref><ref>''Nintendo Power'' Volume 1, page 10.</ref> or '''Sub-Space''',<ref>''Nintendo Power'' Volume 2, page 43.</ref><ref>M. Arakawa. ''NES Game Atlas''. Pages 13, 16, and 21.</ref> also known as the '''Hidden World''',<ref>''Super Mario Bros. 2 Inside Out'', Part I. Page 6.</ref> and misspelled as '''Sup-Space''' on one occasion,<ref>M. Arakawa. ''NES Game Atlas''. Page 18.</ref> 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 Potion]]s (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 [[coin]]s 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 [[vegetable]]s afterwards). Depending on the area, players can also collect [[Cherry|cherries]], [[Super Star|Starmen]], and [[POW Block|POW]]s. 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 [[jar]]s contain a '''Subspace Warp'''<ref>Farkas, Bart G. ''Super Mario Advance'' Official Pocket Guide. Page 105.</ref> 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.

|Jap={{hover|裏画面|うらがめん}}<ref>''Yume Kōjō: Doki Doki Panic'' instruction booklet, pages 21 and 26.</ref>

|Chi=虚拟世界<ref>[https://www.bilibili.com/video/av8876332 iQue's promotional demo play videos of ''Super Mario Advance'' and ''Wario Land 4'']. Retrieved Febuary 9, 2020.</ref>

|ChiR=Xūnǐ Shìjiè

|ChiM=Virtual World

|Dut=Onderruimte<ref>''Club Nintendo'' (Netherlands) ''Classic'', page 31.</ref>

|Ger=Unterwelt<ref>''Super Mario Advance'' European instruction booklet, page 31.</ref>

|Ita=Subspazio<ref>''Super Mario Advance'' European instruction booklet, page 111.</ref><br>Zona d'ombra (''The Super Mario Bros. Super Show!'')

|ItaM=Subspace<br>Shadow zone

|Spa=Subespacio<ref>''Super Mario Advance'' European instruction booklet, page 91.</ref>

*With the exception of the original ''[[Yume Kōjō: Doki Doki Panic]]'', the music playing here is an arrangement of the [[Ground Theme (Super Mario Bros.)|overworld theme]] from ''[[Super Mario Bros.]]''