Memory
Hold more in mind with recall rounds, sequences and spatial exercises.
Nine ways to think
There’s always another angle.
452 authored challenges range from quick pattern spots to creative prompts, memory rounds and reaction tests—with easy, medium and hard options in every skill.
Logic
Reason step by step through deductions, arguments and mini problems.
Focus
Stay locked in with reaction rounds, symbol grids and attention tests.
Creativity
Think sideways through fresh prompts with no single correct answer.
Observation
Notice what others miss in odd-one-out grids and visual details.
Vocabulary
Play with meanings, usage, word relationships and concise expression.
Math
Sharpen mental math with estimates, sequences and everyday numbers.
Patterns
Find hidden rules across numbers, symbols, words and alternating sets.
Visual Thinking
Rotate, count and reconstruct shapes in your mind’s eye.
More than multiple choice
Eleven ways to interact.
Different skills need different kinds of play, so the library moves beyond standard quizzes.
Multiple choiceMulti-selectTyped answersMemory recallSymbol gridsOrderingColour sequencesCreative promptsMini SudokuShape countingReaction tests
Quick reaction
Wait for mint.
TAP
Round 3 of 5 · Target under 500ms
A complete challenge
Every answer teaches something.
Authored challenges include the details the result screen needs—not just a score.
A useful hint
If you get stuck, ask for a nudge that points toward the method without simply giving the answer away.
The intended answer
See a concise explanation of the reasoning. Open-ended prompts remain yours, with no pretend “correct” response.
A related fact
Finish with a memorable idea that connects the challenge to thinking, language, perception or everyday life.