Puzzles for children: machines is a free Android puzzle game developed by sbitsoft.com. The game is designed to appeal to boys who love cars, allowing them to collect photos of modern cars by piecing together big pieces of the image. The game offers several levels of difficulty, with the option to choose between 6, 20, or 30 parts of the image.

The game also offers two game modes - one without prompting and the other without sound and melody. The game is accompanied by pleasant music and commentary, making it an enjoyable experience for children. The game is not only fun but also improves motor skills of hands and trains attention.

Overall, Puzzles for children: machines is an engaging and educational game for boys who love cars and puzzles.