EraPin

EraPin splits the screen in two: on the left an archive photograph taken from Wikipedia with, beneath it, a block THE CLUE that describes the event as a riddle, never naming the city or the year; on the right a world map with a city search field. The day is called a dossier, it contains five photos, and each round is played with two joint answers, an era and a place, arranged below under the labels « ① THE ERA: WHEN? » and « ② THE PIN: WHERE? ». The header keeps score at all times, the current round on the left, the total out of 25,000 on the right.

1. Read the clue under the photo: it gives technological or cultural markers, never the city or the date.
2. Set the era with the year slider, or type the year directly.
3. Place the pin: search for a city in the search field or click on the map. As long as nothing is placed, the confirm button remains on “Drop a pin first.”
4. If you’re stuck, buy a hint: the city street view costs 500 points, the parallel event from the same year costs 750.
5. Confirm the round, then continue. The advertised scoring awards up to 2,500 points for the place and 2,500 for the year, five rounds, 25,000 maximum.

The dual answer changes the nature of reasoning. Finding the place is not enough, finding the era is not enough, and above all the two help each other: a coastline, a car model, a hairstyle narrow the decade, and the decade tells you what kind of city to look for.

The site details its scoring: the location score decreases with distance, the year score with the gap in years, and after confirmation EraPin reveals the answer, shows how close you were and links to the corresponding Wikipedia article.

Daily Dossier

Five photographs, one per round, published together under a date and a dossier title.

Archive

Previous days’ dossiers remain playable from the ARCHIVE link.

Teacher Pro

A classroom panel advertised on the home screen: packs aligned with school curricula (APUSH, AP World, UK KS3, NY Regents), team mode, without student accounts.

• The era and the pin are independent: the year slider responds even before you’ve placed a point on the map, so use it to fix your reading of the photo while you’re still searching for the place.
• The street-view hint costs 500 points, the parallel-event hint 750, on a round that is worth up to 5,000. The second is the most expensive hint in the game; save it for a round where you’re really lost.
• The written clue talks technology and culture, that is, the decade. Treat it as the answer to the “when,” and let the photo answer the “where.”