The Binding of Isaac: Rebirth Not for iPads
The optmized remake of The Binding of Isaac is called Rebirth and was released for PC and several consoles in 2014. Even the Wii U and the New Nintendo 3DS got their own version in 2015 after Nintendo initially debated whether or not to allow it for their platforms.
This year, the version for Apple's iPad was planned but that won't happen. The App Store denied the game because it shows violence against children or child abuse as one can see judging from the game's description. But for many people that's not reason enough to ban it from the platform altogether.
The description: When Isaac's mother hears the voice of God, it orders her to sacrifice her son in order to prove to God that she's a believer. Isaac flees into the cellar where he has to fight against disfigured enemies, estranged brothers and sisters, his biggest fears and eventually his mother.