This Japanese puzzle game is the best brain teaser for all ages.

The game is based on the concept of a square grid of numbers, where each square contains a secret image that must be revealed by filling in all the squares. The game can be played in two modes:

• Classic mode: no error checking and all puzzles are meant to be solved by pure logic.
• Validate mode: the game will check every move and show you if you're making an error.

The gameplay is simple and intuitive:

1. Select a puzzle from the menu

2. Use the four main buttons to solve the puzzle