If your legacy device is running a version like iOS 9 or 10, you can use a computer to sideload the app using your own Apple ID signature. Download and install on your Windows PC or Mac.
Historically, IPAs downloaded directly from the App Store were encrypted and tied to the specific Apple ID of the user who purchased or downloaded them. If you download a raw, un-cracked IPA from 2012, it may prompt you for an unknown Apple ID password when you attempt to launch it. Look for files explicitly preserved for legacy device emulation or digital archiving. How to Install Legacy IPAs on iOS
to disable Apple's code-signing restrictions. Install a tool like AppSync Unified via Cydia.
Apps change so rapidly that older versions are often completely erased from digital history. Preserving the 1.0 IPA ensures that future video game historians can study the exact software that defined the endless runner genre. Technical Realities: Sideloading in the Modern Era