To guarantee your game saving, use the downloaded version

Click the buttons on the right side to try to make the blue and purple rows match. Keyboard keys around WASD supported (the positions of the buttons on screen correspond to the keyboard keys. i.e. the "<" operation is A, ">" is D, etc)

Spoilers for what each button does

  • < shifts the blue row left
  • > shifts the blue row right
  • And - lights up spots that are in common between blue and red
  • Or - lights up spots that are lit in either blue or red
  • Xor - lights up spots that are lit in ONLY ONE of the blue or red rows. Spots lit in both become unlit
  • Not - Inverts the blue row

Join the discord for help, updates and new game notifications:

If the game does not load, try a different browser (firefox works best for me) or get the download

PAYING IS OPTIONAL, but appreciated :)

PlatformsWindows, macOS, Linux, HTML5
Rated 4.0 out of 5 stars
(3 total ratings)
Tags2D, Math, Point & Click, Relaxing, Simple


Download NowName your own price

Click download now to get access to the following files: 25 MB
Version 34 MB
Version 40 MB


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Cool puzzler.