Dual N Back 3D

You start with 1-back which means the previous color or position right before the one you see. If it is the same you click the button. For example if the cube is blue twice in a row you click the color button. Same for position of the cube.

Then after 5 points you get to 2-back, here is where improving your fluid intelligence begins!

2-back means you have to remember the 2 previous colors or positions and click on respective buttons if they are the same.

Google Leaderboard.

Our other memory games in this series:
PathCubes
Pics-N-Back

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