Daily Challenge · 8,800+ Real Cards
Card Mystery Box
Open 5 mystery boxes. Each has 3 face-down cards — pick one based on the hint. Can you find the hidden gems?
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Card Mystery Box
Open 5 mystery boxes. Each has 3 face-down cards — pick one based on the hint. Reveal what you got (and what you missed). Highest total value wins.
Frequently Asked Questions
How does Card Mystery Box work?▾
You open 5 mystery boxes. Each box contains 3 face-down cards from real players in our database of 8,800+ cards. You get a hint about the box contents (sport, era, value range, or rookie status) and pick one card blind. After picking, all 3 cards are revealed so you can see what you got and what you missed. Your score is the total value of your 5 picks.
What are the different game modes?▾
Daily Challenge uses a date-based seed so everyone gets the same 5 boxes on the same day. Compare scores with friends! Random mode generates a new set of boxes each time you play, with unlimited replays.
How is the grade calculated?▾
Your grade (S through F) is based on how close your total value is to the maximum possible. If you picked the most valuable card in every box, you would get an S grade. The percentage shows how much of the optimal value you captured.
What do the share emojis mean?▾
Green square means you picked the best card in that box. Yellow square means you picked a good card (70%+ of the best value). Red square means you picked the lowest value card. Share your emoji grid to challenge friends!
Are the same cards available to everyone in Daily mode?▾
Yes! The Daily Challenge uses a deterministic seed based on the date, so everyone sees the same 5 boxes with the same 15 cards. This makes scores directly comparable across players.