The Legend of Zelda: Picross

The insane desire of Ganon for the Triforce changes the kingdom into picross grids. The weird curse changes the landscape, slicing the Kingdom in squares. Faced with the squared land, Link storms out to defeat Ganon and to save his princess.

A picross fangame based on A Link to the Past, available for Windows and in the Universal Updater for the 3DS homebrew.

You start at Link's house, go to Hyrule Field where a fork leads you to the main dungeon (since the other ways are blocked by a boulder and a grass respectively), fight an enemy in the dungeon that gives you a sword to cut the grass, and so on. It has exploration, bosses, itens, hearts and a bucketload of picross puzzles.