Card Match
Flip cards. Find pairs. The classic — with a relentless timer.
Simon Sequence
Watch the pattern. Repeat it. Each round adds a new step.
N-Back
Was this square in the same spot 2 turns ago? The gold standard.
Digit Span Reverse
Memorize numbers. Type them backward. Most adults cap at 7.
Corsi Block
Watch blocks light up in order. Tap them in the same sequence.
Chimp Test
Numbers flash for half a second. Tap them in order. Chimps beat humans.
Pattern Grid
A grid lights up for one second. Recreate every lit cell.
Word Pairs
Learn unrelated word pairs. We give one. You name the other.
Memory Maze
See the path once. Then walk it blind. One wrong step resets.
Spot the Change
Study a layout. It flickers. One thing changed. You have 5 seconds.
Stroop Test
The word says one color. The ink is another. Tap the INK.
Reaction Time
Wait for green. Tap fast. We measure your raw speed.
Mental Math
Equation flashes. Tap the answer. Beat the clock.
Color Span
Memorize a sequence of colors. Tap them back in order.
Find the Odd One
A grid of identical shapes. One is slightly different. Find it before time runs out.