PREDICT AUCTION
PRICES.
CLIMB THE LEADERBOARD.
Hammer Guess is the collector car auction prediction game. Browse curated auctions from popular auction websites, guess the hammer price, and earn points for accuracy and timing.
Free to play. Web & mobile — same predictions, same leaderboard.
HOW IT WORKS
PREDICT. SCORE. RANK.
Pick an auction
Browse live collector-car auctions and choose a vehicle to predict.
Call the price
Submit your hammer-price prediction. Lock it in before the auction ends.
Earn points
Score based on how close you are — and how early you called it.
ACCURACY SCORE
TIME MULTIPLIER
The earlier you predict, the more your points multiply.
THE GAME
BUILT FOR ENTHUSIASTS
Browse live auctions
Inspect the details
Lock in your prediction
Climb the leaderboard
Create private leagues
Your favorite cars
GLOBAL LEADERBOARD
Every prediction counts. Climb the global ranking by accuracy and timing, filtered by auction source and category across weekly, monthly, and all-time views.
- Sniper, Expert & Enthusiast accuracy tiers
- Time multipliers reward early calls
- Weekly, monthly, quarterly & all-time
PRIVATE LEAGUES
Create an invite-only league with friends, set your vehicle filters by brand, category, and model, and compete on your own private standings.
- Invite-only with unique codes
- Private standings — no outsiders
- 20, 50, or 100 vehicle seasons
ABOUT
HAMMER GUESS LLC
Hammer Guess is owned and operated by Hammer Guess LLC, a company built by collector-car enthusiasts for people who love the auction hunt. Our mission is to turn following popular auction websites into a game of skill — rewarding the sharpest eye for market value.
We curate real, live auction listings and let players compete to call the closest hammer price. No simulated data — just the real market, scored fairly, every week.
READY TO CALL THE HAMMER?
Play for free and make your first prediction today.