Today's puzzle
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How to play
- Read the rule above the cards, for example "Tallest first" or "Earliest first".
- Tap one card and then another to swap them, or use the ▲ ▼ arrows.
- Press Check order. Cards in the right position turn green and lock in place; the rest stay movable.
- You have 3 tries per round. After the round, the real values are revealed.
- Finish all 3 rounds, then share your score. A new puzzle starts at midnight local time.
Strategy
Place the two extremes first: the biggest and the smallest are usually the easiest to judge, and once they lock in green you only have three cards left to reason about. Use your first check as information, not as a final answer: the green cards tell you which middle positions are already solved.
All 17 topics
Every topic has a page with unlimited practice rounds and a complete reference table.
- Planets by distance from the Sun
- Planets by size
- Countries by area
- Countries by population
- Famous mountains by height
- Rivers by length
- Chemical elements by atomic number
- Historical events in order
- Animals by weight
- Classic movies by release year
- Buildings and landmarks by height
- Summer Olympics host cities by year
- US states by area
- US presidents in order
- Programming languages by release year
- Game consoles by release year
- Oceans and seas by size
Frequently asked questions
How do you play Arena Rank?
Each day has 3 rounds. In each round you see 5 items and a rule such as "Largest first". Swap cards until you think the order is right, then press Check. Cards in the right position turn green and lock. You have 3 tries per round.
Is the puzzle the same for everyone?
Yes. Every player gets the same three rounds on the same date, so you can compare scores with friends using the Share button.
Where do the answers come from?
Each topic lists its source on its topic page, for example NASA fact sheets for planets and UN estimates for population. Items whose values are close or disputed are never put in the same round.
Can I play more than once a day?
Yes. Unlimited mode serves random rounds from every topic, each topic page has its own unlimited practice, and the archive lets you replay any past daily puzzle.
Do I need an account?
No. Your streak and results are saved in your browser only.