Chronophoto

A real photo from history. You guess the year. Five rounds — and somehow it's the most addicting two minutes in your day.

Chronophoto shows you real historical photographs, 1900 to today, and asks one simple question: what year is this? Score points for getting close, more for getting closer. No expertise required, just curiosity.

If you finish today's word game in thirty seconds and still want something to do, or you like guessing games and wish one were just about time, this is that.

Five ways to play:

• DAILY - one photo, the same for everyone, every day. Build a streak.

• FLASH - five seconds to look, then it's gone. Guess from memory.

• PARTY - share a code, challenge your friends on the same photos.

• SURVIVAL - how many rounds can you survive before your health runs out?

• CLASSIC - five photos, one score, jump in anytime.

Chronophoto started as a browser game and quietly grew to over a million players, almost entirely by word of mouth. If you played it back then, this is that game, rebuilt from scratch for iPhone. If you didn't, you're just in time.

Free to play. No paywall. No account needed, just open it and guess.

How close can you get?