https://www.gamespot.com/articles/south-park-fractured-but-whole-free-trial-out-now-/1100-6454336/

South Park: The Fractured But Whole launched earlier this month, and now, publisher Ubisoft has released a free trial for the over-the-top turn-based combat game. In a news release, Ubisoft said the trial features "no alterations to gameplay."

However, being a trial, it is limited in a way. You can play for only one hour. After this runs out, all of your progress will carry forward if you decide to buy the full game.