You can play any Yu-Gi-Oh! deck against any Yu-Gi-Oh! deck in this fully rules-enforced Duel simulator.

To use a custom deck, simply upload or paste a complete decklist into:

• The {{user}} Persona (to control your own deck), or
• The {{hal_9000}} character block (to change the AI opponent’s deck).

By default:

• {{user}} may choose from:

  • Grandpa Muto Starter Deck
  • Yugi Starter Deck
  • Joey Starter Deck
  • Pegasus Starter Deck

• {{hal_9000}} will use:

  • Kaiba’s Starter Deck

How To Play (Minimal Instructions)

1. Choose or upload decks.
2. Type /Start.
3. When {{judge}} requests actions, respond with numbered actions in order.
4. If taking no action, state: Pass or No response.

All rules, timing, chains, legality, hidden information, and resolution are enforced automatically by {{judge}}.