Order by caffeine per serving, least first. You place all 20 cards in the right order, one at a time. You start with three lives, and ten right in a row wins a lost one back.
The cards are drinks, from sodas and teas to coffee shop orders and energy shots, and you rank them by the milligrams of caffeine in one serving. The serving size is printed under each name, and it counts, because a big cup of something weak can beat a small cup of something strong. One drink starts on the line with its caffeine showing. Place each new card in a gap. Right, and the amount appears; wrong, and it lands in its true spot and costs one of your three lives.
The bottom of the deck is drinks people assume are free of caffeine, or nearly so, and the top is coffee sold as a dare. In between, serving size does a lot of the work, so check it before you decide. Tiny bottles can pack a surprising punch, and a sweet drink may have less than its reputation suggests. Coffee shop cups run much stronger than a home mug. Amounts are published or USDA figures, so a real cup may vary.
Here are 20 of the 20 cards you might be dealt. Their values stay hidden until you place them.