There is a movie being made about Monopoly of all things.

You can add the executable as a non-steam game to launch and play through steam, but that is all.

GOG sells full games, not keys, however you 100% own the game. It’s provided to you DRM free with no activation or online phone home requirements.

In the same boat. Literally reading the discourse about how this game is ‘setting too high a standard’ and want to support this kind of effort. Also bought through Good Old Games to support their philosophies as well.