To my knowledge, none of these games have bullshit like aggressive DRM like Denuvo or any Anticheat. These are highly regarded Indie (some as big as AA budget) games loved by the community. Some cheaper and smaller in scope, others really huge and more expensive in price too. So there should be something for you.
And if you like like RPGs and don't mind AAA, have a look at the Final Fantasy 7 Remakes. Currently two parts are available and the games are quiet cheap nowadays (especially with the sales event going on). I call them simply Part 1 and 2 here, the third part arrives next year. You don't need any of the DLCs, the games are basically complete: