Search ROM checksums in the browser

Look up a ROM by CRC32, MD5, or SHA-1 checksum without adding a file.

To identify a file, use Identify a ROM by checksum. To calculate or compare hashes, use Calculate ROM checksums.

Look up an existing hash

1. Open a fresh Identify page.
2. Paste your hash into Identify by checksum or game name.
3. Wait for the lookup to finish.
4. Select a release, even for a single result.
5. Read the expected ROM's Checks. Its Simple header shows the console and identification status. Switch to Detailed for its Identify drawer.

Paste the hexadecimal value without an algorithm label or 0x prefix. Either letter case works.

For SHA-256 and other hashes, use Checksum. This lookup does not support them.

You can also paste a hash into the top-bar Find games (by name/checksum), tools, docs, or settings... search. Select a game to open its details in Identify.

Search by game name

1. Enter a game name in Identify by checksum or game name.
2. Select the game, then its release.
3. Read the expected checksums. In Detailed view, open Identify for region and revision where available.

Press Escape to close the results and keep your search text. Press an arrow key or click the search box to reopen them.

Select Try a checksum lookup in the empty search box, then choose the matching Tetris release.

Check your file against a result

Add your ROM to compare it with the selected release. A matching name does not confirm its revision.

A checksum can match several releases. Inspect the candidates before selecting one.

No match does not prove corruption. Modified ROMs, homebrew, and unlisted releases may lack identification records.

If data cannot load, check your connection and retry. See Identify sources for coverage and offline requirements.

Search returns records, not game downloads. Identification runs locally; your file stays in the browser.