First generation of video game consoles
This was also the first involvement of Nintendo in video games. According to Martin Picard in the "International Journal of Computer Game Research": "in 1971, Nintendo had -- even before the marketing of the first home console in the United States -- an alliance with the American pioneer Magnavox to develop and produce optoelectronic guns for the Odyssey (released in 1972), since it was similar to what Nintendo was able to offer in the Japanese toy market in 1970s".
History of Nintendo
Nintendo had also begun development on a CD-ROM attachment for the SNES/Super Famicom. Their first partner in this project was Sony, whom Nintendo had worked with before to provide the SNES with its SPC sound chip. Development on the "Nintendo PlayStation" CD-ROM add-on and SNES/SFC standalone hybrid console began. However, at the last minute Nintendo decided to pull out of the partnership and instead go with Philips, and while no CD-ROM add-on was produced, several Nintendo properties (namely The Legend of Zelda) appeared on the Philips CD-i media console. Upon learning this, Sony decided to continue developing the technology they had into the PlayStation. The exact reason Nintendo left its partnership with Sony has been the subject of speculation over the years, but the most common theory is that Sony either wanted too much of the profits for the machine or the rights to the CD-ROM attachment itself.