Based on the task originally proposed by , and adapted by
. Dual N-Back has been shown to improve working memory over time.
For more information see  and .
The goal of each level is to remember the state of the game exactly N timesteps ago.
The game board is a set of eight squares.
They will flash in a random order, at three seconds intervals.
When you recognize that the same square flashed exactly N steps ago, you press the
Simultaneously, one letter is spoken at each time step.
When you recognize that the same letter was spoken exactly N steps ago, you press the
If you do well, N will increase on the next round.
If you don't do so well, N will decrease on the next round (down to N=1).
There are 20+N time steps in each round.
This game is still in beta phase.
Please be patient for your favorite feature.
Planned features include
a dark theme,
a cloud-sync method for saving progress across devices,
ability to start back at N=1 on demand,
For feature requests and bug reports please contact me at
I will do my best to respond quickly.
Based on the work of , , and others.
Audio clips adapted from , most of the icons are from .
This work is licensed under a
Creative Commons Attribution-NonCommercial 4.0 International License.