You can get a free version of The Witcher Tabletop Roleplaying Game: for free on DriveThruRPG.
Called “The Witcher: Easy Mode,” the free 32-page PDF download is a simplified version of the full rulebook that contains the basic rules and mechanics, six pre-generated characters and a pre-written adventure for game masters who may not want to be responsible for coming up with a full story off the top of their heads.
Written by Cody Pondsmith and J Gray of R Talsorian Games, the company behind Cyberpunk 2020 (on which Cyberpunk 2077 is based), The Witcher Roleplaying Game takes place between the events of The Witcher 2: Assassin of Kings and The Witcher 3: Wild Hunt. We thoroughly enjoyed the session we played with Cody before the game launched last year, and are excited to see what else the R Talsorian team has in store for The Witcher universe.
Source: IGN.com Get The Witcher TRPG For Free