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An encyclopedic collectible card game

Collect everything.
Build your universe.

Every card is a real English Wikipedia article — a comet, a poet, a lost city, a jazz standard. Open packs, grow families of subjects, choose talents and trade with other collectors.

Free to play. No paid packs. No paid advantages.

Start collecting — it's freeHow it works

New players receive 20 packs of six cards. Sign-in uses a one-time email link — no password.

Discover

Each pack holds six distinct subjects drawn by the server with published odds. Duplicates are useful too: recycle or auction them.

Build families

Subjects belong to hundreds of families — from Impressionism to Pokémon to volcanoes. Milestones at 2, 5, 10, 25… raise your passive Kosmo income.

Choose your path

Spend Kosmo on packs or on 120 permanent talents. Bid in player auctions, and watch the Black Market's single worldwide offer each day.

Rarity comes from real popularity

A card's rarity is fixed from the median daily views of its Wikipedia article. Each rarity has a name and its own symbol.

  • Common
    Fewer than 25 median daily Wikipedia views
  • Uncommon
    25 to 99 median daily views
  • Rare
    100 to 499 median daily views
  • Epic
    500 to 2,499 median daily views
  • Legendary
    2,500 to 9,999 median daily views
  • Mythic
    10,000 or more median daily views