Do i have to implement steam authentication service for my game or i can have any authentication method?

Hello I am planning to publish my game to steam, my game uses firebase and Play Games Authentication (For Android). I want to know if can I publish my game to steam using Facebook Login Method? Or do I have to implement steam authentication services?
Hope to get answers soon! Thanks in advance!

Hey there,

in general: Yes you can


People will not like it. When you publish a game on steam it is expected to work with no external account requirements, especially with something like facebook which (at least in europe) has a declining popularity.
For quite some people this might be the point where you loose them so better put in that bit of extra effort.