How it works

1. Look around

   Drag, swipe, or use arrow keys to spin the 360° panorama. Study the architecture, the sky, the people.

2. Drop a pin

   Click the world map to mark where you think you stand. Hover to expand it for accuracy.

3. Pick a year

   Slide or type. Press B for BC, Enter to submit. Closer in space and time = more points.

Replay the tutorial →

How scoring works

Each round is worth 10,000 points — 5,000 for geography, 5,000 for chronology. Both fall off exponentially the further your guess strays from the truth, but the curve adapts to each scene: a 200-year miss on the moon landing is a disaster, the same miss on Sumerian agriculture is excellent — and pinning Hammurabi within 1,000 km is great, the same miss on the Eiffel Tower is not. Curves widen for older eras and harder scenes.

Some scenes carry an uncertainty band — the real-world ground truth is itself fuzzy ("circa 2530 BCE ±500 years"). Guess inside the band, get full credit; outside it, the curve takes over. Casual mode is for practice and personal-best chasing. Daily Challenge puts everyone on the same 5 scenes for true head-to-head — leaderboards reset every UTC midnight.

Leaderboards. Submitting any score requires picking a pseudonym (1–20 chars). Your alias is locked to your device for 30 days so nobody can impersonate you. To carry your alias and standings across devices — phone, laptop, work computer — sign in from the title screen with Google, Apple, X, Facebook, or email. Signed-in players earn a ✓ verified mark next to their alias on every leaderboard.

The scenes

374 scenes today, more shipping every week. Each panorama is a specific moment, place, and year — researched, sourced, and captioned. The pool grows; your favourites cycle in.