d.DodoHistoryCURIOSITY HAS A PLACE HERE
FREE PLAY · FOLLOW THE SIGNAL

Hot and cold geography.
Follow the signal.

There is a mystery country somewhere on Earth. Place a pin, read the signal and decide where to search next. Every guess becomes evidence.

How to play ↓
3 rounds · Interactive globeNo accountNo timer
✦ Free guest play♧ Source-linked explanations◎ Keyboard alternatives↗ 30 country targets
YOUR LITTLE RITUAL

One small discovery. Every day.

Complete today’s globe challenge or daily mix. Every score counts. Your daily record stays on this device. Resets at 00:00 UTC.

Open today’s daily mix →
LOOK. THINK. DISCOVER.

How to play Hot & cold Earth

01

Choose your search view

Explore the interactive globe or switch to the flat map. Country selection and coordinate inputs work without 3D graphics.

02

Place and test a pin

The signal reports distance to the mystery country’s accepted land. A warmer guess is closer than the previous one; a colder guess is farther away.

03

Narrow the search

Use up to six distinct pins. Find the accepted region or reveal it after the final attempt, then inspect the highlighted land and source.

THE RULES, UP FRONT

How scoring works

Three hunts per expedition. A first-pin find earns 1,000 points, then minus 150 per additional attempt. The accepted region is the country’s generalized modern land plus 40 km. The same pin within 1 km of an earlier attempt does not consume a guess.

MORE THAN A SCORE

What you’ll discover

Build a mental map by comparing distances rather than memorizing capitals. Learn why a country’s land boundary, its representative coordinate and its capital are different geographic references.

A few clues for your first game

  • Spread out your first two pins to gain more useful evidence.
  • A warmer pin is relative to your last pin, not automatically your best pin.
  • Switch between globe and flat map without losing the current guess.
BEFORE YOUR FIRST DISCOVERY

Questions about this game

What does hot or cold measure?

Temperature labels summarize distance to the target country’s land. Warmer or colder compares the current distance with the previous submitted pin.

Will the 3D globe work on every device?

Not every device supports reliable WebGL. The game includes a complete 2D map and HTML answer controls, and respects reduced-motion preferences. Physical low-power devices still need broader testing.

Do I need to identify a capital city?

No. This hunt accepts the target country’s land with a disclosed 40 km tolerance. It is not an exact-city or capital guessing game.

Ready to follow your curiosity?

3 rounds · Interactive globe. Free guest play, with no time pressure.

KEEP THE DISCOVERIES COMING
Shape of the world

One mysterious outline. Distance and direction guide your next guess.

Explore the game →Where did it live?

Follow an animal’s story. Place its home on the globe.

Explore the game →The daily expedition

A shape, a species, a habitat and a journey through time. One shared daily set.

Explore the game →

Explore beyond the game

Continue with DodoHistory’s animal directory and free learning tools. Each existing tool has its own permanent page.

Animal directoryAnimal size comparisonDinosaur time overlap toolUnit converterAll games

Source-checked games · sources checked October 31, 2026; independent expert review not claimed. Finite question banks rotate and eventually repeat. Modern coastlines are navigation references, not ancient continental reconstructions. Read sources and play rules.

PLAY WITH CURIOSITY

The evidence behind the fun.

Eight game mechanics plus a daily remix. Every answer has an explanation and source. The 82 question records and country targets rotate and eventually repeat; they are source-checked on October 31, 2026, not independently expert reviewed.

Country shapes are generalized modern Natural Earth boundaries (public domain). Distances and directions in Shape of the world are to representative country coordinates, not border distances. Hot & cold Earth uses nearest accepted land boundaries with a 40 km tolerance. It is a geographic puzzle, not an animal range map.

Scoring: up to 1,000 per round. Shape and hot/cold: 1,000 on attempt one, then minus 150 per extra attempt, up to six guesses. Species: minus 200 per extra clue; a wrong committed answer gets zero. Year: 1,000 × exp(−absolute year error / 30), rounded. Habitat and chronology: 1,000 correct, zero otherwise. Memory: 5,000 minus 150 per move beyond five, floored at zero. All rules appear before committing.

Use touch, mouse or keyboard. Globe movement is optional; a 2D map, place selector and coordinate form are available. Reduced motion disables reveal movement. Sound is off; there are no autoplay effects or speed bonuses.

Challenge links reproduce the same question set and order on compatible game versions. They are local, unranked and not tamper-proof. Share the link to invite someone to play the same set on DodoHistory.

Natural Earth · Public domain · Representative country coordinates · mledoze/countries · ODbL 1.0 · Adapted coordinate data · Three.js · MIT. Photographs used here retain the individual licenses listed in each reveal; historical reconstructions are labeled.
YOUR PERSONAL FIELD NOTES

Little discoveries add up.

Saved only on this device. These are personal play records, not a global leaderboard.

Reset these saved games?

This clears the game library’s current expedition, personal records and shared daily streak on this device. It does not change the original globe game or your tools or animal collections.

Leave this expedition?

Your progress stays on this device when browser storage is available.