Reference
Field guide
20 collections, 497 answer entries and 90 number prompts power the game. Open one to get a feel for the scale before you play.
Play today's flightThese are frozen reference figures, not live statistics. Rounding, measurement scope and source dates can differ. Read the data sources page for the limits. How we handle data
Earth
High places
Elevation above sea level · rounded metres
27 entries · Measured in m
- Highest
- Mount Everest · 8,849
- Lowest
- Scafell Pike · 978
Earth
Room to roam
Total surface area · frozen rounded figures; not land area alone
60 entries · Measured in km²
- Highest
- Russia · 17,098,246
- Lowest
- Belgium · 30,528
Earth
Island hopping
Individual islands, not whole island countries · approximate km²
30 entries · Measured in km²
- Highest
- Greenland · 2,166,086
- Lowest
- Crete · 8,336
Earth
Look up
Rounded height · to tip for towers, current height for monuments
28 entries · Measured in m
- Highest
- Burj Khalifa · 828
- Lowest
- Leaning Tower of Pisa · 56
Space
Planet parade
Eight planets · equatorial diameter, rounded kilometres
8 entries · Measured in km
- Highest
- Jupiter · 142,984
- Lowest
- Mercury · 4,879
Space
A year elsewhere
Orbital period in Earth days · approximate
8 entries · Measured in days
- Highest
- Neptune · 59,800
- Lowest
- Mercury · 88
Space
Moon collection
Mean diameter · approximate kilometres
21 entries · Measured in km
- Highest
- Ganymede · 5,268
- Lowest
- Deimos · 12.4
Science
Atomic intuition
Atomic number = protons in the nucleus
48 entries · Measured in protons
- Highest
- Uranium · 92
- Lowest
- Hydrogen · 1
Culture
Movie night
Original theatrical cut · minutes, not extended editions
40 entries · Measured in min
- Highest
- The Return of the King · 201
- Lowest
- Toy Story · 81
Culture
Save-point memories
Earliest full commercial release · excludes early access and remakes
33 entries · Measured in year
- Highest
- Baldur's Gate 3 · 2023
- Lowest
- Pong · 1972
Culture
String theory
Typical standard configuration · variants exist
15 entries · Measured in strings
- Highest
- Concert harp · 47
- Lowest
- Erhu · 2
Play
Finish lines
Standard named distances · metres
14 entries · Measured in m
- Highest
- 100 kilometre ultramarathon · 100,000
- Lowest
- 60 metres · 60
Play
Shape of things
Simple named polygons
17 entries · Measured in sides
- Highest
- Hectogon · 100
- Lowest
- Triangle · 3
Everyday
Paper trail
ISO 216 · long edge in millimetres
11 entries · Measured in mm
- Highest
- A0 · 1,189
- Lowest
- A10 · 37
Everyday
In a moment
Fixed durations · seconds; a year here means 365 days
16 entries · Measured in s
- Highest
- One common year · 31,536,000
- Lowest
- One second · 1
Science
Digital luggage
Decimal MB / GB versus binary MiB / GiB
9 entries · Measured in bytes
- Highest
- Tebibyte · 1,099,511,627,776
- Lowest
- Byte · 1
Culture
Between the covers
First publication of the original work · not a later translation
38 entries · Measured in year
- Highest
- The Hunger Games · 2008
- Lowest
- Don Quixote · 1605
Earth
The long road
Total area, land plus water · rounded square kilometres
50 entries · Measured in km²
- Highest
- Alaska · 1,723,337
- Lowest
- Rhode Island · 4,001
Space
Far from home
Orbital semi-major axis · millions of kilometres
8 entries · Measured in million km
- Highest
- Neptune · 4,495.1
- Lowest
- Mercury · 57.9
Everyday
Small things, big world
Exact conventional conversions · metres
16 entries · Measured in m
- Highest
- Astronomical unit · 149,597,870,700
- Lowest
- Millimetre · 0.001