15,000 games- more fun than ever ( pc)

some type of PC game my parents game me growing up. I never really played it. good used condition make offer. cleaning out my closet. I have a bunch of games taking up space. I want to possibly upgrade to a newer generation ( ps3, Xbox 360 on up) because I never had them growing up. I was fortunate and grateful enough to own a ps1, PS2, and original Xbox consoles.it was fun but it's time to move on. I would like these gone within the month if possible.