Installing .ipa files from unofficial sources requires tools (like AltStore, Sideloadly, or TrollStore). Since this specific filename looks like it comes from a "scene" or modding community, be aware that:

Always verify the source to ensure no malware was injected into the binary.

Even with the "64bit" tag, newer iOS versions (like iOS 16+) sometimes break legacy game engines due to changes in Metal (graphics API) or filesystem permissions.

That filename looks like a very specific (an iOS application archive) for a modified or "cracked" version of Grand Theft Auto III . Based on the naming convention, File Name Breakdown