List of all free games that add +1 to library?

This one has card drops, but I can't remember if it gives +1.

From a simple google search
Topic

F2P games don't give +1 anymore.

This maybe?

https://www.freesteamkeys.me/
this site doesnt give u games directly... it will redirect u to sites where massive giveaways r going on... from which u can redeem keys nd do card drops to add to collection or sell them :)

idk if there is any current ones for free games, but there is one i think would still work to add free dlcs of owned products here.