What Does Verified Mean?

Games on this site marked with a Verified badge have been checked against a preservation database and confirmed to be unmodified, known-good ROM dumps. Verification uses No-Intro.

No-Intro (cartridge-based platforms)

No-Intro is a preservation project that catalogs known-good dumps of cartridge-based games. Their DAT files contain cryptographic checksums (MD5, SHA-1, and CRC32) for every verified ROM dump.

Platforms verified with No-Intro: Game Boy, Game Boy Color, Game Boy Advance, NES, SNES, Nintendo 64

How Verification Works

During the build process, each ROM file is hashed using MD5 and compared against the appropriate DAT file for its platform. If the hash matches an entry in the database, the ROM is considered a verified, unmodified dump.

Verified means:

  • The ROM file is a byte-for-byte match to a known-good dump in the No-Intro database
  • The file has not been modified, patched, or corrupted
  • The dump matches what was originally on the physical media

Not verified means one of:

  • The ROM was not found in the database (it may be an alternate dump, a hack, a translation, or an unlicensed game)
  • The ROM’s hash does not match any known entry (it may have been modified or is a bad dump)
  • No DAT file was available for the platform

Checking for Yourself

Each verified game page includes a Checksums section showing the MD5, SHA-1, and CRC32 hashes from the source database. You can verify a ROM file yourself using standard tools:

Linux / macOS

md5sum game.gb
sha1sum game.gb

Windows (PowerShell)

Get-FileHash game.gb -Algorithm MD5
Get-FileHash game.gb -Algorithm SHA1

Compare the output against the checksums shown on the game’s page. If they match, your ROM is an identical copy of the verified dump.

About No-Intro

No-Intro is a volunteer-driven preservation group focused on documenting and cataloging ROM dumps of cartridge-based games. Their database covers thousands of games across dozens of platforms. DAT files are periodically updated as new dumps are verified by the community.

For more information, visit no-intro.org.