Gakken
Gakken publishes educational books and magazines and produces other education-related products. For nursery school age children and their caretakers, they produce items such as child care and nursing guides. For school children, they publish text books, encyclopedias, and science books. Gakken also publishes educational magazines for high school students, as well as school guides for all levels. Gakken also provides products for playrooms, study rooms, computer rooms and science rooms. Gakken also publishes general family-oriented and gender-oriented magazines in sports, music, art, history, animation, cooking, and puzzles. History. Gakken is perhaps originally known for producing Denshi  blocks and packaging them within electronic toy kits such as the Gakken EX-System, as far back as the 1970s. One of their original lines, the EX-150, was reissued in 2002, and was so popular as to inspire an expansion pack. In 1981 Gakken released "Super Puck Monster", a tabletop LCD arcade game that resembled Pac-Man. Coleco also licensed "Super Puck Monster" and released it as an official Pac-Man game. Gakken also released an official Dig Dug game, unlike "Super Puck Monster" this game was only sold in Japan and never exported. In October 1983, the Gakken Compact  Vision TV Boy console was released. Since 1993 Gakken has been publishing monthly logic puzzle magazines under the name "Logic Paradise". Gakken manufactured an 4-bit computer known as the GMC-4.