You see a list — countries, animals, movies, elements — but you do not see how they rank. The auctioneer puts up an item, everyone bids, the highest bidder takes it. At the end the hidden values are revealed: whoever collected the most value for the least money wins.
That is the hook. If the thing you paid a fortune for turns out to sit at the bottom of the list, your budget is gone. If the bargain you skipped turns out to be at the top, you feel it.
2 to 8 players. A match takes about 9 minutes. Bots fill empty seats if you are short.