Nonogram - Picross(griddlers)

[Explain]

This nonogram-(picross, griddlers) is a very famous game.
This game has 450 stage list
and Stage will be updated continously!

5x5 rectangular square for beginners
10x10 square for Middle class
15x15 square for intermediates
20x20 square for Expert
Stage will be updated continuously.

Please do break the world record each stage.

So starting ~~~~ ~~

- Features -

1. Streamlined interface
2. AUTO Fill function
3. Undo function
4. Auto Save function
5. hints for beginners
6. World Record Management to the Stage
    That can compare skills with other players