The feature is currently available in select regions for specific games, such as Death Stranding Director's Cut or Sackboy: A Big Adventure.
With the Game Trials option, you can try out one of the available games for 6 hours (Death Stranding) and 5 hours (Sackboy), but the timer starts not when you begin playing, but when the download starts. And for many users with a slow connection, this will become a major problem, rendering the feature almost useless. It is strange, but perhaps Sony wants to prevent users from playing for too long or getting their fill of the game. And fans did not like this, criticizing the company on Reddit and on social networks.
So far, Sony has not commented on the issue in any way, but there is hope for changes.