Casual play

For hobbyists who love the game. The playing is the point. No rating shown here. No prize pressure.

Open the lobby →Try adventure practice →

• Lobby — find an opponent, or create a private room and share the code with a friend.
• Adventure — practise against AI with no account. Battle state, starter choice, and clears can be saved in this browser only. Server-recorded PVE battles and rewards are paused; prior recorded progress remains readable.

Check the lobby before relying on a game write surface.

Fun first. Nothing here earns money or store credit. Ratings live at /play/compete; the boundary is documented at /methodology/play-module.

New? Start with the beginner's guide, then the adventure practice page. If you learned OPTCG in Japanese, the bilingual glossary maps every term.