First, open the settings app and tap on your name.
Then, tap on the "Subscriptions" tab. (Note: That you might not automatically see this tab. In that case, tap on iTunes & Appstore)
Next, tap on your Apple ID. View Apple ID then sign in and scroll down to the "Subscriptions" button.
Next, tap on The Escapists: Prison Escape (subscription) you want to review.
Now, tap on cancel. (Note: That if you don't see a "Cancel Subscription" button for the escapists: prison escape, then it's definitely canceled already. It won't be renewed anymore).