The Forgetful Fish shared-deck format

Play Dandân Online

Play the cult Magic: The Gathering shared-deck format in your browser with complete rules enforcement, solo bots, private rooms, matchmaking, and no download required.

Play free now How Dandân works

No account required. Start with the guided tutorial or play a bot immediately.

The complete Dandân experience

Dandân Online is a free, browser-based way to play the format also known as Dandan or Forgetful Fish. It works on desktop and mobile, and can be installed as an offline-capable progressive web app.

Solo and multiplayer

Practice against four bot difficulties, open a private room for a friend, find a casual match, or play ranked.

Rules handled for you

Priority, targeting, combat, stops, takebacks, rewinds, triggers, and shared-zone card interactions are fully enforced.

Seven shared-deck variants

Play classic blue Forgetful Fish or explore black, red, white, green, Togglodyte, and Trontron variants.

What is the Dandân MTG format?

Dandân is a two-player Magic format built around a single 80-card deck. Both players draw from the same library and use the same graveyard, turning every draw, Memory Lapse, and top-deck decision into a compact strategy duel.

Ready to play Forgetful Fish?

Learn the format step by step or jump directly into a free game.

Open the play menu