This app was mentioned in 12 comments, with an average of 1.17 upvotes
Are you on Apple? I'm on android.
https://play.google.com/store/apps/details?id=com.nkm.kp.hh&hl=en_US&showAllReviews=true
Hyper Heroes? hyper heroes
If you mean sling/marble-like mechanics then it's probably Hyper Heros, quite enjoyable thing. There are several games with similar controls, often aimed at PVP like Smash Rivals or The Muscle Hustle.
You know you can click those and it takes you to Playstore right?
https://play.google.com/store/apps/details?id=com.nkm.kp.hh&hl=da&gl=US
hyper heroes? or maybe slingshot braves, which is no longer available sadly.
The one I was thinking when you said it I think was delisted but this seems to have similar gameplay https://play.google.com/store/apps/details?id=com.nkm.kp.hh
I was thinking of this one I think https://www.androidcentral.com/slingshot-braves-review
Or this one http://proapk.org/slingshot-hero-gameplay-android/
Both of those are no longer on googleplay