Rock

Rock (岩がん石せき Ganseki) is a monster Type. Rock monsters are most often EARTH-Attribute and typically have high DEF.

There are several archetypes focused on Rock monsters, including "Adamancipator", "Fossil", "Gogogo", "Gorgonic", "Magnet Warrior", "Magna Warrior", "Triamid" and "Megalith". The archetypes "Koa'ki Meiru", "Gem-Knight" and "Sphinx" also include many Rock monsters. The series Monk, Piece Golem, and Hex-Sealed Fusion mostly include Rock monsters.

Many Rock-Type monsters were released in The Lost Millennium. The Structure Deck, Structure Deck: Invincible Fortress, is focused on Rock monsters.

Some of the more notable cards include: "Nibiru, the Primal Being", "Giant Soldier of Stone", "Granmarg the Rock Monarch", "Fossil Dyna Pachycephalo", "Block Dragon", "Gorgonic Guardian", "Morphing Jar", "Doki Doki", and "Gallant Granite".

The only main character in the anime to use a Rock Deck is Jim Crocodile Cook, although other characters do use Rock-Type monsters. Yugi Muto uses the "Magnet Warriors", Jaden Yuki uses "Neo-Spacian Grand Mole", Yusei Fudo uses "Rockstone Warrior", Jack Atlas uses the "Piece Golems" and "Power Giant" and Yuma Tsukumo uses the "Gogogo" monsters.