NonoCube is a puzzle game (similar to Picross and based on nonogram puzzles) in which your aim is to fill the right squares to make a picture. To work out what the picture should look like, you are given clues. The clues tell you how many cells in that row or column should be filled.
There is a tutorial mode, and eleven puzzles to try.
Completed puzzles are marked in the list but can be reattempted as many
times as you like.