Look up cards and other information about the Yu-Gi-Oh! TCG, 遊戯王 유희왕 OCG, Master Duel, and Rush Duel in all official languages. Free and open source. Sponsored by YGOPRODECK.

Cardian is an open source Yu-Gi-Oh! card information bot. Supports TCG/OCG/Genesys, Master Duel and Duel Links.

Free and open source bot that provides customizable, flexible syntax to query card info and rulings/FAQs for the Yu-Gi-Oh! TCG and OCG in all languages supported by the official database.

Look up cards, play rated matches, and host tournaments for any Yu-Gi-Oh! format.