Sony occasionally adds titles to their cloud streaming catalog for PC, though Astro's Playroom is currently not one of them. Alternative Games for PC
It sounds like you're looking for a way to play on your PC for free. Sony occasionally adds titles to their cloud streaming
Because of this, there are two main things you should know regarding a "PC version": Sony occasionally adds titles to their cloud streaming
If you love the vibe of Astro's Playroom —a bright, polished 3D platformer—there are some fantastic alternatives available natively on PC (via Steam or Epic Games Store): Sony occasionally adds titles to their cloud streaming