Test your Brain with these Brain Teasers, Games and Illusions


Here you can enjoy the Top 25 Brain TeasersGames & Illu­sions that Sharp­Brains read­ers (pri­mar­i­ly adults, but younger minds too) have enjoyed the most. It is always good to learn more about our brains and to exer­cise them!.

Fun experiments on how our brains and minds work

Brain Teasers1. You think you know the col­ors? Try the Stroop Test

2. You say you can count? Check out this brief atten­tion experiment

3. Test your stress level

4. Guess: Are there more brain con­nec­tions or leaves in the Amazon?

Challenge your attention and memory

5. Quick brain teasers to flex two key men­tal muscles

6. Count the Fs in this sentence

7. Can you iden­tify Apple’s logo?

Optical illusions visual illusion of paralel lines

8. Ten clas­sic opti­cal illu­sions to trick your mind

9. What do you see?

10. Fun Men­tal Rota­tion challenge

11. What is going on with these pictures?

Language and logic puzzlesclick here for illusion test

12. Which way is the bus head­ing?

13. Where do words go?

14. Join this par­ty for polyglots

15. Fun & Brainy Haikus. Yours?

circleA few visual workouts

16. Is a cir­cle a circle?

17. Less obvi­ous than it may appear

18. How many…

Teasing your pattern recognition and thinking

19. Proverbs to exer­cise your mem­ory and reasoning

Math Brain Puzzles20. Find the miss­ing num­ber in The Emp­ty Triangle

21. Good puz­zle for the whole brain: The Blind Beggar

22. Find the the Real­ly, Real­ly, Real­ly Big Number

Brain teasers for job interviews

Brain Teaser Questions

23. Please con­sider Lin­da’s job prospects

24. A few guessti­ma­tions often used in con­sult­ing and tech interviews

25. How many golf balls can fit in a school bus?

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  1. terri on July 17, 2008 at 6:56

    I am look­ing for brain teas­er activ­i­ties for seniors. can you help me? thanks,

  2. Tammy on November 12, 2008 at 10:01

    I am also look­ing for activ­i­ties for seniors with ear­ly alzheimers dis­ease and can not use a com­put­er. Can any one help?

  3. Alvaro Fernandez on November 12, 2008 at 1:06

    Ter­ri, many of these teasers can be used by “seniors”. Age itself is not the best pre­dic­tor of cog­ni­tive function…so you will need to decide what teasers can be appropriate.

    Tam­my: you should con­sult the local chap­ter of the Alzheimer’s Asso­ci­a­tion, they do have many resources you will find valuable. 


  4. Jocelyn on December 9, 2008 at 4:35

    Using mouse slows the response time. Touch­screen would make more sense.

About SharpBrains

SHARPBRAINS is an independent think-tank and consulting firm providing services at the frontier of applied neuroscience, health, leadership and innovation.
SHARPBRAINS es un think-tank y consultoría independiente proporcionando servicios para la neurociencia aplicada, salud, liderazgo e innovación.

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Top 10 Brain Teasers and Illusions


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