The Mario Picross game for the Game Boy and Super Famicom is a collection of paint by numbers logic puzzles involving a grid with numbers for every row and column which refer to the amount of marked squares within the grid.

Since paint-by-numbers puzzles were popular in Japan but not North America, releasing the game in the US was a gamble, and ultimately not a very successful one. It is perhaps the most obscure Mario title to date, and is not usually classed as a true Mario game. Learning from their failure, Nintendo of America did not release the sequels of the game, Mario's Super Picross and the Game Boy sequel Mario's Picross 2 in North America.