Time Per Round
✓
5s
Quick
✓
10s
Standard
✓
20s
Relaxed
Difficulty
✓
Easy
5 timeout lives
✓
Medium
3 timeout lives
✓
Hard
1 timeout life
Wrong answer=instant game over. Lives only save you from timeouts!
Best Score
Your all-time record
0
Two inventions. One question. Beat the clock and build your streak.
Wrong answer=instant game over. Lives only save you from timeouts!
Yes, picking the wrong event ends your run instantly, regardless of difficulty or how many lives you have left. Lives only matter when the timer hits zero before you pick.
Difficulty controls timeout lives only: Easy gives 5, Medium gives 3, Hard gives 1. A wrong answer ends the game in every mode with no exceptions.
You earn one point per correct answer. The game ends when you're wrong, so the score equals your streak length. Your personal best is saved on your browser locally and shown before each game.
Questions cover real historical inventions, discoveries, and milestones from ancient times through the modern era, a wide mix so every game feels different. The images shown are from Wikimedia commons.
No, timer and difficulty are locked in when you hit Start. Head back to the home screen to adjust them before your next game.
It's stored in your browser's local storage, so it persists across sessions on the same device and browser. Clearing your browser data will reset it.