Prepare for a new Picross challenge, which plays homage to gaming history…
Mario’s Picross X is a full hack of Mario’s Picross, with 256 new puzzles to solve.
All of the puzzle solutions in Mario’s Picross X are based on retro gaming sprites and images, containing characters such as Mario, Sonic, Kirby, Link and Jet Set Willy.

http://www.romhacking.net/hacks/4286/