The Goal
Each day, a famous invention appears. Your mission: guess the exact year it was created.
You get 6 tries to nail it. Each guess reveals clues through colored digits that guide you closer.
Reading the Colors
Every digit in your guess gets colored to show how close it is:
The 1 and 8 are exact. The 5 is off by 1 (answer is 6). The 4 is off by 3.
BC and AD
Some inventions are ancient! Toggle between eras to guess inventions from any period in history.
Tap the era chip on screen or press B on your keyboard to switch between BC and AD.
Bonus Rounds
After guessing the year, two bonus challenges test your knowledge:
Country of Origin — Where was it invented?
The Inventor — Who created it?
Each is multiple choice with 2 attempts. Optional, but they boost your stats!
Stats & Streaks
All your stats are saved locally in your browser. Track your progress across multiple dimensions:
Games Played · Win % · Current Streak · Best Streak · Daily Streaks
Daily streaks count consecutive days played — come back every day to keep yours going!
Sharing
After completing a puzzle, tap SHARE to copy your result grid to the clipboard. Share with friends — just colored squares, no spoilers!