If the sideloading process sounds like a nightmare, you have excellent native alternatives on the App Store that scratch the same itch:
Let’s address performance. Hollow Knight is a 2D game, but it is resource-heavy. The particle effects in the City of Tears or the mossflies in Greenpath can throttle older iPhones. hollow knight ipa
Warning: Without a developer account ($99/year), your sideloaded app will expire after 7 days. You will need to refresh the installation via your computer weekly. If the sideloading process sounds like a nightmare,
AltStore is the most popular sideloading tool for non-jailbroken devices. Assuming you have found a verified, working IPA
Assuming you have found a verified, working IPA file (version 1.5 or higher is ideal for all DLC content), you cannot simply double-click it. Apple restricts installation to the App Store unless you sideload. Here are the three methods.
An IPA (iOS App Store Package) is the archive file for an iOS app. Sideloading an IPA means installing an app outside Apple’s official App Store, typically using tools like AltStore, SideStore, or a jailbroken device.