GOG has a bunch of free games to download. I also got 4 free games just for signing up.

I was actually going to buy something through them but sadly they don't take gift cards since they're in Europe. So I looked around and got 22 (!) free games! Stuff like Crusader Kings II, 2 of the Ultima Adventure games, Ultima 4 (!), Arena, Daggerfall + Unity, and Wolfenstein Enemy Territory.

Beats the pants off Steam and Epic, fuck 'em.