Sony
Sony's first video game system was the Playstation one. Sony actually had no intentions of ever making a video game system but Nintendo came to Sony for help. Nintendo wanted Sony to create a video game system with the video games on a disc instead of a cartridge. Sony demanded 25% of all income from the system and games but Nintendo wanted more, so they left to go have Philips develope the system. Sony took the research they had and developed a full blown system. The Playstation was a smash hit and has created some very well known video game titles. Ever since then Sony has been developing Systems and games. Nintendo did try to file a lawsuit against Sony for breech of contract but they lost.