Downloading files labeled as typically refers to unauthorized digital copies of the game intended for use with emulators or modified hardware. While emulators themselves are generally legal to download, downloading an ISO or ROM of a copyrighted game you do not own is considered copyright infringement . Understanding the ISO File
Many internet service providers (ISPs) track traffic to known piracy sites and may issue warnings or suspend internet service for repeated violations. Official Alternatives DOWNLOAD FILE – ATTACK ON TITAN 2.ISO
In many jurisdictions, including the US, downloading game files is illegal unless you are creating a backup of a physical disc you already own. Distributing these files (uploading) is unambiguously illegal and is the primary target for enforcement. including the US