Only 43 People Alive Have This Blood Type
It's rarer than a winning lottery ticket.
About this quiz
One blood type is so rare that fewer than 50 people on Earth are confirmed to have it. Test your knowledge on the world's strangest blood facts, medical oddities, and the science flowing through your veins.
Expect 10 multiple-choice questions in the history category. Difficulty is medium. Every question comes with an explanation and a fun fact so you leave smarter than you arrived, even when you whiff it.
What to expect
- 10 questions · one per page, no fluff
- ~5 minutes to play
- Average score is 4.3/10 (43%). Beat the average to rank up.
- Hardest question: only 25% get it right.
- Earn doubloons per correct answer. Perfect round: bonus 50.
- Optional Timed Mode: 20 seconds per question, +50% doubloons.
Frequently asked
- How long does the Only 43 People Alive Have This Blood Type quiz take?
- About 5 minutes for 10 questions. No time pressure unless you turn on Timed Mode.
- How hard is it?
- This one's medium. The average player nails 4.3 out of 10. The hardest question only 25% get right.
- Do I need to sign up?
- Nope. Play free, no account required. Your streak and doubloons save to your browser.
- Can I play again?
- Aye, replay anytime. Your personal best is tracked for each quiz — beat your own score.
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