You've played The Stick of Truth and you're anxiously awaiting the release of The Fractured But Whole later on this fall. To tie you over in the meantime, you can join Stan, Kyle, Kenny, Cartman, Wendy, Butters and the rest of crew on your mobile device with South Park: Phone Destroyer. It's not officially getting released for a few more months, but an early version is now available for download.
Developed by Ubisoft's RedLynx studio in collaboration with South Park Digital Studios, South Park: Phone Destroyer is both a card-collecting battle game like Hearthstone and Clash Royale, as well as a real-time, player vs. player (PVP) combat title. Strategy plays big here and you can fully expect the visual signature of the series, as well as the irreverent humor that has always gone with it.
I've downloaded the free-to-play title myself. Just note that it could be unstable, as it's not really the finalized version. In any case, you can find it via the iTunes App Store for iOS devices and via the Google Play Store for Android devices. Here's the reveal trailer from E3 earlier this month in case you missed it. Look for the full release later this year.