This article is originally from the Yu-Gi-Oh! Wiki. You can find the original content here.
Types are a means to split monsters into groups (in a broader way to what Attributes do) in order to enable Support Cards granting various effects, to a specific order of monsters.
Each monster has 1 Type, and there are 21 different legal Types in the OCG & TCG (and a few made up) so far.
Real Monster Types[]
Aqua 
[]
See the main article, Aqua.
A notable made-up card is "Majesty of Ice", when a notable made-up Archetype is the Slime monsters.
Beast 
[]
See the main article, Beast.
Some notable made-up Beast-Type monsters are "Ali Kangaroo" and "Arceus".
Beast-Warrior 
[]
See the main article, Beast-Warrior.
Some notable made-up cards are "Blaziken", and "Lucario".
Dinosaur 
[]
See the main article, Dinosaur.
Dragon 
[]
See the main article, Dragon.
Noteable Dragon Archetypes include the "Elemental Dragons" and "Darkness Dragons" .
Fairy 
[]
See the main article, Fairy.
Fiend 
[]
See the main article, Fiend.
The made-up "Doomforce" and "Apocalyptic Dragon" cards are all also Fiends.
Fish 
[]
See the main article, Fish.
Insect 
[]
See the main article, Insect.
Machine 
[]
See the main article, Machine.
Some notable made-up Machine's weakness cards are "Combat War Lost" and "Short-Circuit Cyber", when a notable made-up Machine-Type monster is "Ultra Cyber Dragon".
Plant 
[]
See the main article, Plant.
Psychic 
[]
See the main article, Psychic.
Some notable made-up cards are:
- Asys TM-32
- Dimension Lord - Yuriza
- Dimension Destroyer
- PSI Awaken Hayabusa Knight
- Psycho Summoner
- Artificial Intelligence
Pyro 
[]
See the main article, Pyro.
Reptile 
[]
See the main article, Reptile.
Rock 
[]
See the main article, Rock.
Sea Serpent 
[]
See the main article, Sea Serpent.
However, the advent of made-up Project Sea Serpent caused a lot of new Sea Serpents to be created, and now their main strategy is to power each other's ATK points and destroy opposing monsters. Some notable made-up monster cards are "Leviathan - Serpent of the Depths" and "Justice Hydra", when some notable made-up support cards are "Depths of the Ocean" and "Water Shield."
Spellcaster 
[]
See the main article, Spellcaster.
The only notable made-up Spellcaster so far is Magic Hero Galaxica.
Thunder 
[]
See the main article, Thunder.
A notable made-up cards is Raijin, the God of the Thunder, and some noteable made-up support cards are Static Fusion Ball and Aura of Lightning.
Warrior 
[]
See the main article, Warrior.
A notable made-up warrior monster card is Cannibal Warlord.
Winged Beast 
[]
See the main article, Winged Beast.
Zombie 
[]
See the main article, Zombie.
A notable made-up weakness card is Talisman of Banishing Souls.
Divine-Beast 
[]
See the main article, Divine-Beast.
Some notable made-up monsters:
- Chronos the Ancient God of Time and Space
- Bahamut, the Divine King of the Dragons
- Rat God
- Elemental Dragon - God Dragon
- The Creator God of Life, the Universe and Everything
Immortal 
[]
See the main article, Immortal.