[KindOne]

Some people don't like Steam since its proprietary. I own around 200 games on Steam and almost all of them have Steam's DRM that prevents me from running the game without being logged into Steam.

https://partner.steamgames.com/doc/features/drm

Some games can be bought on Steam, GoG (DRM-free), and/or their website.

Example:

https://www.kerbalspaceprogram.com/games-kerbal-space-progra...

https://www.gog.com/en/game/kerbal_space_program

https://store.steampowered.com/app/220200/Kerbal_Space_Progr...