DIMENSIONS
These profiles refer to other realms outside of the mainstream Earth of Marvel Comics (also sometimes referred to as Earth-Prime, Earth-616). They include alternate realities and timelines, alien worlds, pocket realms, etc.
Alternate Earths has/have a separate page.
Dimensions (with descriptions)
Note: In addition, at the bottom, there's a link to some of the past eras of the Marvel Universe (just started it)
Aegis (Microverse planet) - by Grendel Prime
Amalgam Universe (Earth-9602) - by Skullogeist
Amazar (destroyed by Lore)
Ankh Dimension (Zodiac Cartel)
Arakne (Knights of Pendragon story)
Avalon (home of Celtic Gods, etc) - by William & Snood
Baloney-verse (Encroachiverse) - by Will U
Bast (Microverse realm, Iron Man story)
Bermuda Triangle (Skull the Slayer)
Bewilderness (realm of Psyphon)
Biphasia (encountered by Werewolf)
Black Sea Dimension (Namor story)
Boreas (Iceworld of Ikthalon)
Borders of the Land of the Dead (Defenders story) - by Chadman
Brilliant City (X-Man story)
Cloudsea (Spindrifter, encountered by Spider-Man)
Creation II (Creators)
Crooked World (Earth-238) - by Loki
Crossroads (and it's associated dimensions, former prison of Hulk) - by Anti-Grimm
Crossroads of Time (Time Guardian)
Crystalium (home of Crystar) - by David Lawrence
Dark Dimension (home of Dark Crawler)
Dark Place (accessed by Mercy)
Death Dimension (ruled by Melinda Morrison, Spider-Man/Dr. Strange stories)
Dimension II (Otkid's dimension)
Dimension of Doom (2-D Men) - by Ben Penberdy
Dimension of Suicide (Encroachiverse) - by Will U
Dimension which the Creature was shunted into by Giggles (might by Dormmamu’s)
Dimension Z (Living Eraser(s) )
Don't-Worry-Be-Happy-Verse (Encroachiverse, Earth-90313) - by Will U
"Drakos" (Shazana)
"Duckworld" (Howard the Duck's altered reality homeworld)
Earth - links to all Alternate Earths
Elsewhen (Warlord Kargul)
Elsewhere (Power Pack costume dimension)
Encroachiverses (She-Hulk dimensions) - by Will U
Enitharmon's dimension (Dr. Strange story)
Far Place of New Universe (imaginary world)
Femizonia (Earth-715)
Feng-Tu (Realm of Death for Chinese Gods and K'un L'un) - by Will U
Fiame (Microverse planet) - by Grendel Prime
Fifth Dimension (Xemu)
Halls of Fear (Dweller-in-Darkness)
Haven (Phaedra's dimension)
Here (And There) (Defenders world) - by Chadman
Inniverse (Fantastic four realm)
Insipiverse (Encroachiverse) - by Will U
Interzone (junction b/t Nexi of Reality)
Iskelior's realm (Dr. Strange story)
Iuriale's realm (Dr. Strange story)
Khaa (home of Bellil; Conan story)
Kosmos (Creatures)
Land of Shades (Death Dimension)
Land of Spring of New Universe (Far Place)
Land of Winter of New Universe (Far Place)
Lost Land (Jaggta-Noga's home-dimension)
Luminia (Iron Man story)
Machus (Earth-74101)
Media-verse (Encroachiverse) - by Will U
Mega IV (unknown destination, Monark Starstalker reality)
Megrim (Sombra/Bzzk'Joh)
Microverse (links only)
Mindscape (Sleepwalker's realm) - by Changeling
Narcissi-verse (Encroachiverse) - by Will U
Narcisson (dimension and city of the Dark Gods)
Netherworld of Eternal Doom (Demon of the Mask)
Never-Summer (Microverse planet) - by Grendel Prime
976-verse (Encroachiverse, Earth-90715) - by Will U
Noriega-verse (Encroachiverse) - by Will U
No-Space (Time Guardian)
Other Earth (Fantastic Four story)
Other Realm (Home dimension of Star-God)
Otherworld (Avalon) - by Will U & Snood
Palace of Death and Rebirth (Anubis)
Paradise and the City of Death (Crossworlds, Hulk characters) - by Anti-Grimm
Perrinois (Spider-Man/Fantastic Four story)
Phaedra's dimension (Haven)
Puppet-verse (Encroachiverse) - by Will U
Purple Dimension (Aggamon)
Purple Veil (Purple Dimension)
Quadriverse (Dr. Strange)
Rammatpolen (home of Dragon Riders) - by Prime Eternal
Realm of Exiles (Nightmare story)
Realm of Madness (demon dimension) - by Markus Raymond
Realm of Nothingness (Abysss)
Realm of Shadows (Death Dimension)
"Realm of Unreality" (Rom story)
Saku (Spider-Man story)
Schwarzraum (realm associated with Mephisto's Hell)
Searland (Biphasia)
Shadow Realm (alien dimension) - by Prim Eternal
Shadow-Realm (Biphasia)
Shadow Realm (home of Dark Crawler)
Shadowverse (Shadow Realm)
Sixth Dimension (Tiboro)
Slaveworld (Kulla)
Sphere (Microverse planet)
Stormking (planet, Monark Starstalker reality)
Strange Matter dimension (Shanzar)
Styrakos (Death’s Head (FPA) )
Sylos VII (Microverse planet)
Tartarus (realm of Pluto) - by Will U & Prime Eternal
Tartessus' extradimensional realm (Dr. Strange story)
Terragonia (Kronak the Barbarian)
Therea (Zokk/Maftra, Man-Thing story)
Trashi-verse (Encroachiverse) - by Will U
Tunnelworld (Defenders saga)
Void (Realm of Nothingness, Abyss)
Wasteland (Rose of Purity)
Web (Web-Spinners)
Weirdworld (fantasy realm) - by Prime Eternal
White Room (alien dimension) - by Prime Eternal
"Will This Be the End of The World?" world (micro-world) - by Prime Eternal
Winterland of New Universe (Far Place)
Xandu's dimension (Spider-Man/Dr. Strange stories)
Yann (xd, Yandroth homeworld) - by Chadman
Zendu (Tales to Astonish)
Zephyrland (Namor characters)
Zero Street (actually the dimension around it)
Zianon (Cloak & Dagger/Ghost Rider story)
other Eras