Hi there,

I'm new to gamedev.net, but I have a question.

If I don't have all OS types, but I know that I can build to all of them.

How do I know what are the min and recommended specs to tell Steam?

My game Super Kittens is a game developed in Unity engine and it will be released on 28th Feb 2019.

It is a family friendly first person game.

Thanks Sam

If you cannot benchmark yourself then you'll need to send copies to people for testing. You can either find fans willing to do it, or use paid services for this. Nothing gets around doing the actual testing. Depending on if you're using a pre-made engine or not, there might be already established minimum requirements set which means your game is either at that, or above. Finding out RAM and GPU usage should be fairly simple as well. You'll want to consider the engine's GPU card requirements if applicable.

This is where closed or open BETAs come in handy.  

Thank you, Steam says that I don't need it to complete the release and I did check Unity's site and typed what they said.