Big BrainHow big is your brain?
100 levels of tricks, riddles and logic puzzles, from silly to seriously hard.
Get it on the App Store
The obvious answer is usually wrong.
Poke, drag and tap everything. Then think again.
Tricks that fool you
Answers hide in plain sight, and some levels use your phone itself.
Logic that bites back
Catch the liar, crack the code and take on Sudoku, picture logic and more.
Hints when you're stuck
Each level goes from a gentle nudge to the full answer. Earn IQ points for every win.
Then it gets really hard.
Sliding block escapes, a magic hexagon, and hangman where the word keeps changing to dodge you. Level 100 asks five questions, and one slip sends you back to the start.
Get the game
Support
Found a bug, or having trouble with a purchase? Email me and I'll help.
sixbeforenineapp@gmail.comI'm stuck on a level
Tap the bulb at the top right of the level. The hints get stronger each time, and the last one is the answer.
How do I restore Remove Ads?
On the home screen, tap the gear, then Restore purchase. Use the same Apple Account you bought it with.
How do I change my ad choices?
If you were shown an ad consent form, tap the gear on the home screen, then Ad privacy.
Why won't a level work on my device?
Some levels use device hardware such as motion sensors or the charger. If yours can't do it, the final hint offers a skip.
Is the IQ score real?
No. It's just for fun, and it isn't a real IQ test.