Draw a single stroke, flip tiles from black to white or vice versa, and turn each single line into a solid color each. A Polarium fan game for the PICO-8.

Features 100 levels, and a level editor so you can make your own levels or play other people's custom levels. Custom level passwords are fully compatible with Polarium.

Lexaloffle BBS thread


  • Arrow keys: Move
  • Z: Primary key (select menu item, draw and finish stroke)
  • X: Secondary key (go back, cancel stroke)
  • Enter: Menu (pause, go back, show hint)

Instead of Z/X, you can use C/V or N/M (if you use a QZERTY keyboard, for example).

PlatformsWindows, macOS, Linux, HTML5
Rated 5.0 out of 5 stars
(2 total ratings)
AuthorTobias V. Langhoff
Made withPICO-8
Tags8-Bit, Casual, Cult Classic, Demake, grid, grid-based, PICO-8, polarium, Retro
Average sessionA few seconds
InputsKeyboard, Touchscreen
LinksSource code, PICO-8 BBS


PICO-8 cartridge 25 kB
picolarium_windows.zip 865 kB
picolarium_linux.zip 481 kB
picolarium_mac.zip 1 MB

Install instructions

You can download this game as a .P8.PNG cartridge that can be loaded and played in PICO-8, or as stand-alone executable programs for Linux, Mac OS X or Windows.

Development log


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if you’re looking for another platform to port Polarium to, I think Playdate would be a good fit. Probably a lot of Lua from Pico-8 version could be reused.