Higher or Lower

Higher or Lower is the simple guessing game where you decide whether the next value is higher or lower than the one you can see. The classic version uses playing cards (it was the basis of TV game shows like Card Sharks and Play Your Cards Right). Our version swaps cards for real-world trivia: you compare two items and guess which has the bigger number, building the longest streak you can.

How to play

• Pick a topic: Country populations, Item prices ($), Mountain heights (m) or Animal speeds (km/h).
• The left item shows its value. The right item’s value is hidden.
• Guess: is the right item HIGHER or LOWER? Click the button, or press the Up arrow (or H) for higher and the Down arrow (or L) for lower.
• If correct, you score a point, the right item slides over to become the new left item, and a new mystery item appears.
• One wrong guess ends the game. Press New Game, Enter or Space to play again.
• Score = consecutive correct guesses. Your best streak is saved in your browser.

Beginner strategy

• Anchor on the extremes. If the left item is near the top of its topic (China’s population, Mount Everest, a cheetah), lower is almost always right. Near the bottom (Iceland, a snail, a cup of coffee), guess higher.
• Middle values are the hard calls. When the visible value sits mid-range, think about the specific item on the right instead of playing the odds.
• Know the categories. Heights mix mountains with buildings, so a famous tower is far shorter than almost any named peak.
• Watch for ties. Some items share a value (several animals are listed at 80 km/h). A tie counts as a correct guess, whichever button you press.
• Switch topics to learn. Each topic has a fixed set of about 30 items, so repeat play teaches you the numbers.

The probability math

• The mystery item is drawn at random from the rest of the topic’s list, so the chance of “higher” equals the share of items above the current value.
• If the visible item is the 3rd biggest out of 30, only 2 of the 29 possible mystery items are higher, so lower wins about 93% of the time.
• An item right in the middle of its list is close to a coin flip.
• In the card version, a 2 is beaten by every other rank and a King by only the Ace (when Aces are high), so the end ranks are the easy calls there too.
• Note: in our game, equal values always count as a win.

FAQ

• Q: What topics are there? A: Four: country populations (millions), item prices (US dollars), mountain and landmark heights (metres) and animal top speeds (km/h).
• Q: What if the values are equal? A: A tie counts as correct, so your streak continues.
• Q: Are the numbers exact? A: They are rounded, approximate figures (prices in particular change over time), meant for a quick comparison game rather than as reference data.
• Q: Pure luck or strategy? A: Mostly knowledge. Knowing roughly where each item sits in its list turns most guesses into easy calls.

For other simple games, try Coin Flip, Rock Paper Scissors, War, or Blackjack.