I think he just wants a "Games That Defined The PC" article.
exactly, but with two exceptions - there won´t be multiplatform titles /however I don´t count mac, I count only consoles/ and excluding multiplatform defining games. It would be somehow special, because PC is not a console

I'm a long time PC gamer and I can make a list like this (but it will probably take a long time ).
yes, I know that there are many great games for PC..but it would be better to list only the best of the best, to die for PC games rather than listing dozens of PC games..Look at all those "defining games" guides - there are roughly 15 entries in each - and that´s what I want. Yes, you can add another 15 in "honorable mentions" but the main list shouldn´t be so huge..
and it would be best to mention only the games that still matters today, in other words - are still worth of your time.. yes, ultima might have been revolutionary, but who would want to play it today?
And finally - it would be possible only with Racketboy´s permission so who knows..