||This article's lead section may not adequately summarize key points of its contents. (February 2013)|
|This article relies on references to primary sources. (February 2013)|
|Stats||Open Game License stats|
|First appearance||Monster Manual, 1st Edition (1977)|
A gelatinous cube is a fictional monster from the Dungeons & Dragons fantasy role-playing game. It is described as a ten-foot cube of transparent gelatinous ooze, which is able to absorb organic matter.
Creative origins 
The gelatinous cube is an invention of Gary Gygax, and first appeared in the Monster Manual (1977), rather than being lifted from outside sources and adapted to a roleplaying setting, as were many mythological monsters like the minotaur and dryad.
Being a cube that is a perfect ten feet on each side, it is specifically and perfectly "adapted" to its native environment, the standard, 10-foot (3.0 m) by 10-foot (3.0 m) dungeon corridors which were ubiquitous in the earliest Dungeons & Dragons modules.
Publication history 
Original Dungeons & Dragons 
- Dungeons & Dragons "white box" set (1974),
- Greyhawk (1975), the first supplement to the "white box".
Dungeons & Dragons (Basic, Expert etc) 
First edition Advanced Dungeons & Dragons 
- Monster Manual (1977)
- Dragon #124 (August 1987), "The Ecology of the Gelatinous Cube".
- Published first edition Advanced Dungeons and Dragons adventures which included gelatinous cubes as adversaries that the players encounter included "The Ruins of Andril", published in Dragon #81.
Second edition Advanced Dungeons & Dragons 
- Monstrous Compendium Volume One (1989).
- Monstrous Manual (1993), under the "ooze/slime/jelly" heading.
Third edition Dungeons & Dragons 
- Monster Manual (2000), under the ooze entry.
- The 3.5 edition revised Monster Manual (2003), also under the ooze entry.
Fourth edition Dungeons & Dragons 
|This section does not cite any references or sources. (September 2010)|
A gelatinous cube looks like a transparent ooze of mindless, gelatinous matter in the shape of a cube. It slides through dungeon corridors, absorbing everything in its path, digesting everything organic and secreting non-digestible matter in its wake. Contact with its exterior can result in a paralyzing electric shock, after which the cube will proceed to slowly digest its stunned and helpless prey.
Reproduction is through a form of asexual 'budding', in which a smaller, stub cube is left behind in a side corridor to grow into a full-sized cube, although these stub cubes run the risk of being absorbed by their own parent on its next trip down the corridor.
Gelatinous cubes typically live underground.
Gelatinous cubes, being mindless, are always neutral.
Other publishers 
In other media 
- In Ultima I a gelatinous cube is commonly encountered in the dungeon levels.
- Gelatinous cubes are one of the many types of monsters in NetHack and Ancient Domains of Mystery.
- Gelatinous cubes occur in EverQuest and EverQuest II, both as monsters and house pets.
- In the 1992 movie Wayne's World, arcade owner Noah Vanderhoff talks about a fictional game in which a gelatinous cube consumes villagers.
- In the movie Futurama: Bender's Game, while playing D&D Dwight Conrad states that the gelatinous cube dies in horrible poverty.
- Gelatinous cubes appear in the animated film Rocketmen Vs Robots.
- Adventure Time featured a gelatinous cube in the episode Dungeon.
- In deck card game Munchkin there is a monster called Gelatinous Octahedron.
- Monster Manual
- Gygax, Gary, and Dave Arneson. Dungeons & Dragons (3-Volume Set) (TSR, 1974)
- Gygax, Gary and Robert Kuntz. Supplement I: Greyhawk (TSR, 1975)
- Allston, Aaron, Steven E. Schend, Jon Pickens, and Dori Watry. Dungeons & Dragons Rules Cyclopedia (TSR, 1991)
- Gygax, Gary. Monster Manual (TSR, 1977)
- Greenwood, Ed. "The Ecology of the Gelatinous Cube." Dragon Magazine #124 (TSR, 1987)
- Melluish, Ian (January 1984). "The Ruins of Andril: An AD&D adventure for 4-8 characters, levels 8-11". Dragon (TSR) 8 (7): 41–56.
- Cook, David "Zeb", et al. Monstrous Compendium Volume One (TSR, 1989)
- Stewart, Doug, ed. Monstrous Manual (TSR, 1994)
- Williams, Skip, Jonathan Tweet, and Monte Cook. Monster Manual (Wizards of the Coast, 2000)
- Mearls, Mike, Stephen Schubert, and James Wyatt. Monster Manual (Wizards of the Coast, 2008)
- Thompson, Rodney, Bonner Logan, and Sernett, Matthew. Monster Vault (Wizards of the Coast, 2010)
- Clinton Boomer, Jason Bulmahn, Joshua J. Frost, Nicolas Logue, Robert McCreary, Jason Nelson, Richard Pett, Sean K Reynolds, James L. Sutter, and Greg A. Vaughan. Dungeon Denizens Revisited (Paizo, 2009)