How sharp is your brain?
Free cognitive tests, daily puzzles and quizzes — pick a direction below or search for a game by name. No signup, works on any device.
5 minutes · one Brain Score across five domains · 100 = average
Browse by type
Not sure where to start? Tap a tile — puzzles, memory drills, speed tests, or quizzes.
Full Brain Test
One score across five domains
Daily puzzles
Wordly, Sudoku, Connections & more
Speed & Reflexes
Reaction time, aim, typing pace
Memory
Digits, words, patterns, sequences
Attention & Focus
Focus, search, colour, Stroop
Skill & Logic
Maths, typing, logic practice
Personality quizzes
IQ-style and self-discovery tests
Speed & Reflexes
Jump hereMemory
Jump hereSequence Memory
Repeat the growing pattern
Number Memory
How many digits can you hold?
Verbal Memory
Seen it before, or brand new?
Visual Memory
Remember the flashing tiles
Chimp Test
Are you smarter than a chimpanzee?
Dual N-Back
The working memory heavyweight
Memory Match
Clear the pairs, beat the clock
Word Memory
Study a list, then find it in a grid
Attention & Focus
Jump hereSkill & Logic
Jump hereHow the tests work
Every test here is modelled on a task from experimental psychology — digit span, the Stroop effect, the Corsi block task, dual n-back, simple reaction time. You play the task, we score it in its native unit (milliseconds, digits, levels, words per minute), and your result is placed on a distribution of player scores so you instantly see the percentage of people you beat.
Your personal bests stay on your device — we never ask who you are. Scores submitted to the global rankings are completely anonymous.
Train what you measure
Testing is the fun part; the gains come from retesting. Reaction time sharpens with alertness and practice, memory span grows with chunking strategies, Stroop scores climb as your focus improves, and typing speed responds to technique more than talent. Each test page explains what it measures, what a good score looks like, and exactly how to improve it.
Start with the Full Brain Test to find your weakest domain, then train it with the individual tests. Come back in a week and watch the percentiles move.