Pendulum (archetype)
"Pendulum" (ペンデュラム Pendyuramu) is an archetype consisting of Pendulum Monsters and cards that support them.
This archetype contains two sub-archetypes, "Pendulum Dragon" and "Pendulumgraph".
"Pendulum Machine" is not a "Pendulum" card, because it does not have 「ペンデュラム」 in its Japanese name. However, because support for this archetype only works on Spell/Trap Cards and Pendulum Monsters in the Main Deck, this is not an issue.