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.