Polarium

GameFAQs
Contains release data and a message board.
http://www.gamefaqs.com/portable/ds/data/925392.html

IGN DS
Contains news, previews, screenshots, and a message board.
http://ds.ign.com/objects/707/707314.html

Polarium Puzzle Archive
An archive of custom puzzles, with codes and images.
http://polarium.strategyplanet.gamespy.com/

GameSpy DS
Review, by Phil Theobald: "Granted, the concept of staring at a screen full of black and white squares for minutes on end looking for the correct line to draw may not sound like the most exciting game out there, but for those who appreciate a good mental challenge, it's a treat." [Score: 4 out of 5] <small>(April 18, 2005)</small>
http://gba.gamespy.com/nintendo-ds/one-line-puzzle/605192p1.html