Accidental Inventions
1 / 15The pacemaker was accidentally invented when engineer Wilson Greatbatch used the wrong component, specifically a wrong what?
About Accidental Inventions
Great inventions discovered by accident This free general knowledge activity is built for older adults who want clear, readable browser-based games without sign-up friction.
General knowledge games mix recall, reasoning, and pattern recognition to keep each round varied and mentally engaging. This quiz includes 15 questions, so it works well as a quick session or as part of a longer brain-training routine. A printable version is available if you prefer offline play or want to share the game at home, in a classroom, or in a group setting.
About Accidental Inventions
Accidental Inventions is a free general knowledge quiz with 15 multiple-choice questions aimed at mixed difficulty. Great inventions discovered by accident A typical run takes about 7 minutes, hints are always one tap away, and your streak ticks up the first time you finish a game on a given day.
A few sample questions
1. Penicillin was accidentally discovered in 1928 by which scientist?
Answer: Alexander Fleming
2. The microwave oven was accidentally invented when a chocolate bar melted in the pocket of an engineer working with what technology?
Answer: Radar equipment
3. Post-it Notes were invented after Spencer Silver at 3M accidentally created what?
Answer: A weak adhesive
Frequently asked questions
How many questions are in Accidental Inventions?
Accidental Inventions has 15 multiple-choice questions. Each one has four answer options and an explanation that appears after you answer, so you learn something even when you miss.
Is Accidental Inventions free to play?
Yes. The entire SeniorBrainGames catalog — including Accidental Inventions — is free, with no sign-up required, no time limits, and no ads on top of the game. It also works offline once the page has loaded once.
How long does Accidental Inventions take?
Most players finish Accidental Inventions in about 7 minutes. You can pause between questions, replay it as often as you like, and there is no penalty for taking your time — answers are explained after you submit them.
What's a good follow-up after Accidental Inventions?
If you enjoyed this general knowledge quiz, try the Daily Challenge — five rotating questions, refreshed every 24 hours, that count toward your streak. You can also use the Surprise Me button on the homepage to land on a different game type for variety.
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