The app you're likely referring to is ""Color Nonogram CrossMe,"" a mobile puzzle game featuring nonograms (also known as grid logic puzzles or Japanese crosswords) with a colorful twist. Suitable for all age groups, as indicated by its "Everyone" content rating, it doesn't contain any inappropriate content for either children or adults.

The app can be installed on Android devices running Android 5.0 (Lollipop) or newer, thanks to the requirement for Android devices supporting API level 21 and above. This covers a broad range of modern Android devices.

Should you require more detailed information about the app, such as its features, download instructions, or anything else, feel free to inquire!

Nonograms, also known as Picross or Griddlers, have a fascinating history that began in Japanese puzzle magazines. In 1988, Non Ishida introduced three picture grid puzzles in Japan called "Window Art Puzzles." Two years later, in 1990, James Dalgety in the UK named them "Nonograms" after Non Ishida, leading to their weekly publication in The Sunday Telegraph.

In Japanese nonograms, the numbers function as a form of discrete tomography, indicating the number of unbroken lines of filled-in squares in any given row or column. For example, a clue like "4 8 3" means there are groups of four, eight, and three filled squares in that order, separated by at least one blank square. Solving these puzzles involves determining which squares to fill and which to leave empty.

While nonograms are typically rendered in black and white, representing a binary image, they can also incorporate color. When colored, the number clues are colored accordingly to indicate the hue of the squares. For instance, a black four followed by a red two could mean four black boxes followed by empty spaces and then two red boxes, or simply four black boxes immediately followed by two red ones.

Reviewed by Content Team

Requirements (Updated Version)

The size of Hanjie puzzles is theoretically unlimited and they are not restricted to square formats. This adaptability enables a vast array of complexities and innovative designs in puzzle creation.

As of 1995, Griddlers had already been incorporated into handheld electronic toys in Japan, promoted under the name Picross - Picture Crossword. These gadgets introduced an interactive aspect to solving puzzles, thereby making nonograms more accessible to a wider audience.