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2xKit

Dual N-Back Lite

Track a shape's position and a spoken letter across turns, and flag when either repeats from N steps back.

Runs in your browser

How to use this

  1. 1Click "Start" to begin a sequence of trials, each showing a lit square in a grid along with a spoken or displayed letter.
  2. 2Watch and listen to each trial as it plays.
  3. 3Click "Position match" if the current square's position matches the one from one step back, and "Letter match" if the current letter matches the one from one step back.
  4. 4Your score is the number of matches you correctly identified across the full set of trials.

Frequently asked questions

More games to try

Working Memory Span Test

Recall growing lists of numbers in order — how many digits can you hold at once?

Sequence Recall

Watch a growing sequence flash, then repeat it back in order.

Word Memory Match

Flip cards to find matching word/definition pairs.

Distraction Focus Test

Spot the target word hiding among near-identical decoys.

Card Flip Match

Flip two cards at a time to find matching pairs before the timer runs out.

Number Recall Ladder

Memorize a digit string, then type it back — each round adds one more digit.