Funny as PC gaming started much earlier for me with BBS games and ZZT like DOS games. I also had a Commodore and was playing greats such as California Rasins, Gauntlet and Nosferatu long before Windows but this info-graphic doesn't show the stone age of PC gaming.
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http://www.lostlevels.org/200308/200308-raisins.shtml (california rasins on commodore)
http://www.gamesdbase.com/game/commodore-64/gauntlet.aspx (gauntlet)
http://www.lemon64.com/?mainurl=http%3A//www.lemon64.com/games/details.php%3FID%3D1811 (nosferatu)