Game: Color Zen

There's a growing tendency towards abstract, single-serving gameplay that is beginning to define the casual gaming space.  As the ultimate renditions of pick-up-and-play, entries like Hundreds, Mosaique, and Blendokuhave dropped shiny gems and cutesy creatures for the sake of simplified, streamlined, and perfected puzzle mechanics.  Although not a genre definer alone, Color Zen is a worthy addition to their shapely ranks.