where I can get all these games?
Um...are you kidding me?
It's written in the post that you quoted. "Look up the dates of these games when
they first appeared on this site." You can find these games on this site. This site, the one you are on now. Click on the search field in the upper right of this page, type/copy-paste the name of the game you want to find, or 'GDS' if you want them all to come up, make sure you have the 'This Forum' selected and the 'Search Titles Only" box checked off ==> Profit!