During the StadiaCast Podcast John Justice of Stadia has confirmed game trials are coming to Stadia. The solution of game trails sounds similar to that of what Onlive did, a now-defunct cloud gaming solution of the past. This will allow anyone to try a game for a limited amount of time. This will allow people to try Stadia to see if it works for them and also see if the game is to there liking. This feature was a very popular feature on Onlive. This allowed some of the multiplayer games to have a higher population like Homefront. The catch was you could only play for a very limited time and had to log out of the game and go back into it.
You can watch the Podcast below.