Apple's security is tighter. You cannot install unsigned APKs. Your best bet is to sideload using AltStore or TrollStore (requires jailbreak or developer account). Alternatively, use a web-based emulator to play the Game Boy Advance version Road Rash: Jailbreak directly in Safari.
: The PC version famously features tracks from 90s grunge bands like Soundgarden and Therapy?. Download Road Rash at XTCabandonware download road rash
Currently, Road Rash is not widely available on modern digital storefronts like Steam, GOG (Good Old Games), or the Nintendo Switch Online service. EA has not ported the classic titles to modern consoles in an official capacity for years. This lack of commercial availability drives many fans toward the gray areas of the internet. Apple's security is tighter