Live Auction · 9,500+ Cards · 4 AI Bidders
Card Auction House
Bid against 4 AI collectors in a simulated sports card auction. Manage your $500 budget across 5 lots. Win cards below market value for the best grade.
How It Works
- 5 sports cards go up for auction, one at a time
- You start with a $500 budget to bid across all 5 lots
- 4 AI bidders compete against you with different strategies
- Each lot has a 15-second bidding window
- Highest bid when time runs out wins the card
- Win cards below market value to get the best grade
The Bidders
💪 Big Mike
aggressive — bids hard and fast
🧮 Penny
conservative — sticks to fair prices
🎯 The Sniper
sniper — waits then strikes late
❤️ CardFan99
emotional — overpays for favorites
Frequently Asked Questions
How does the Card Auction House work?
Five sports cards go up for auction one at a time. You start with a $500 virtual budget to bid across all 5 lots. Four AI bidders with different strategies compete against you. Each lot has a 15-second bidding window. The highest bid when time runs out wins the card. Try to win cards below their market value for the best grade.
Who are the AI bidders?
Four distinct AI personalities: Big Mike (aggressive — bids hard and fast), Penny (conservative — sticks to fair prices), The Sniper (waits then strikes late), and CardFan99 (emotional — overpays for favorites). Each has a different maximum they will pay relative to market value.
How is the grade calculated?
Your grade is based on how many of the 5 lots you win. S grade = won 4-5 lots, A = won 3, B = won 2, C = won 1, D = won 0. The key is budget management — you cannot win every lot if you overspend early.
What is the best bidding strategy?
Manage your budget carefully. Skip overpriced lots where AI bidders are emotional. Focus on lots where you can win below market value. Watch the bid history to learn each AI personality. Late bids in the final 3 seconds are risky but can snipe deals.
What is the difference between Daily and Random?
Daily mode uses a date-based seed — everyone gets the same 5 cards that day. Random mode picks 5 new cards each time, so you can practice unlimited auctions and test different strategies.