Steam is one of the biggest, they have most of the latest releases and older games to at reduced prices, and guess what specials and freebies. GOG is mainly for older games and there are a lot of free ones to be had, just do a goggle for the games you your looking at and your OS or Operating System, IE Windows 10 / 8 / 7, Unix Ubuntu Etc, like this. "Games name, how to play on OS." This should tell you if you can play it, and if you need to do something first. There are a lot of MUD's about, or Multi user Dudgeons, also space games like Star trek on line & The Elder Scrolls on line, if your into a type of game then just do a goggle with say Space games or Card games Etc, but before you down load do a goggle for a Review of that game, some have spy wear in them, the review should warn you. Hope this helps Leona OK sorry this thing decided I was trying to spam, the links are safe, and I don't own any shares in them, wish I did, you will have to remove the spaces if you use the links.