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Sony and Nintendo begin working on the "super disc" The Super Disc was going to be a CD-ROM attachment that was intended to be part of Nintendo's soon to be released Super Nintendo game. However, Sony and Nintendo parted ways business-wise and the Super Disc was never introduced or used by Nintendo.
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Sony started working on their first system the Playstation.
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In 1991, Sony used a modified version of the Super Disk as part of their new game console - the Sony Playstation.
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The ps2 was released.
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The ps3 was realesed this day.
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The newest PS4 system so far was realesed this day.