The coders are back in the sixth and final volume of the hit computer-programming series by New York Times-bestselling author Gene Luen Yang. The Coders always knew their programming skills would take them far, but they never guessed it would take them to another dimension! To save humanity, they must travel to the two-dimensional world of Flatland. Only there they can acquire a weapon powerful enough to defeat Dr. One-Zero, but to open the gateway to Flatland, they must write their most difficult code yet! Available in softcover and hardcover editions.