Right now, every week they are giving away free games! Just go to the Epic Games Store and check the front page for the free game of the week. They will sometimes have daily free games. We will post them, but this is a great resource for great games for FREE!
GOG (Good old Games)
Amazon Prime Games
If you have Amazon Prime, they have amazing deals on games! Check out Prime Gaming (amazon.com) here. I am always seeing free games here to play.
Games with Gold
If you have Games with Gold through Microsoft, you can get free games, as long as you keep your membership. However, you must claim the new ones ever 2 weeks. Once claimed, you can play them. most games are for the Xbox One and 360. What's nice is, they are all playable on the Xbox One and Xbox Series X|S (as far as I know). Some games are playable even on the PC, but not many. Go check them out here: Xbox Live Gold: Multiplayer for Everyone
If you have a PS4 or PS5, you can get free games for it through PlayStation Plus. Check them out here: This month on PlayStation Plus