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About this page & FAQ

About PlayMemorize Sort em' up!

PlayMemorize Sort em' up! is a free ranking game built around three categories you don't see in any other ordering game · animals by brain cell count, athletes by body weight, and city pairs by great-circle distance. Items appear in random order; you tap them smallest to largest. One wrong placement ends the round and reveals the true numbers.

Three categories. Animals are ranked by neuron count - from C. elegans (302 neurons) up through honey bees, octopuses, dogs, chimpanzees, and humans (86 billion) to the African elephant (257 billion). Athletes are ranked by documented body weight - Simone Biles, Lionel Messi, Mike Tyson, LeBron James, Shaquille O'Neal, Yokozuna. City pairs are ranked by the great-circle distance between them - London to Paris (344 km), New York to Tokyo (10,870 km), Buenos Aires to Tokyo (18,370 km).

Adjustable difficulty. Easy mode spreads picks across the full range of a category · Hard mode bunches them so the absolute numbers actually matter (is the LeBron-vs-Arnold weight gap really there? Is Sydney closer to London than Buenos Aires is to Tokyo?).

Pick a category or roll the dice. Lock the round to one category, or leave it on Mixed and let the game pick a fresh category every round.

Part of the PlayMemorize family of free brain-training games. Runs entirely in your browser, works offline as a Progressive Web App.

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Q: How does Sort em' up! work?

Several items from one category appear in random order. Tap them in ascending order of the property the round asks for · fewest brain cells first, lightest body weight first, or shortest distance first. After your last tap the game reveals the true numbers and your streak advances if you got them all right.

Q: Which categories are included?

Three to begin with: animals by neuron count, athletes by body weight, and city pairs by great-circle distance. A round only ever mixes items from one category, so you're never asked to compare a honey bee with the distance between Paris and Berlin.

Q: Where do the numbers come from?

Neuron counts from Suzana Herculano-Houzel's surveys (the standard reference for cross-species brain cell comparisons). Athlete body weights from published sports profiles · weight is part of the public sporting record for boxing, basketball, sumo, and wrestling. City distances are great-circle calculations between standard reference coordinates.

Q: How does difficulty scale?

Easy mode picks items spread across the full range of the category, so the order is mostly common sense. Hard mode picks items bunched together in value, where you actually need to know the numbers · is the dog or the pig more brainy? Is Berlin closer to Vienna or Prague?

Q: Is it free?

Yes, completely free. No account, no ads, no paywalls. Best streaks are saved locally in your browser per category and difficulty combination.