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BPS Super Mario Bros. 2 Patcher review

Free#17 of 20 in ROM Patching Software

A focused, free browser tool for validating and applying BPS patches to compatible NES ROMs.

5.8/10Editor score
Visit the Patcher
BPS Super Mario Bros. 2 Patcher5.8 Visit the Patcher

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

BPS Super Mario Bros. 2 Patcher is a free web tool for applying BPS patches to the NTSC version of Super Mario Bros. 2. It is aimed at users who want a focused browser workflow: upload a compatible ROM, upload a BPS patch, let the tool validate both files, and download the patched output as an NES file. The project is published by Producks and uses a web interface hosted on GitHub Pages.

Validation is a central part of the workflow. The tool checks ROM CRC32 checksums and validates the BPS patch source checksums before applying the patch. It can also automatically adapt the iNES header and switch between supported ROM revisions when needed. Those features make it more suitable for this specific patching scenario than a basic file transformation page, especially when a compatible ROM may use a supported revision or header variant. The process stays in the browser, with the patched result delivered as an NES file.

The trade-off is a narrow scope. The published specifications show support for the BPS format, web access, checksum verification, and single-file patching rather than batch patching or command-line use. The tool is therefore a good fit for an occasional Super Mario Bros. 2 patching task involving the supported NTSC release. Users who need other patch formats, broader game coverage, automated batches, or a terminal-based workflow should choose a different ROM patching tool. For its defined use case, the free browser approach keeps the workflow direct without adding a broader patch-management layer.

BPS Super Mario Bros. 2 Patcher pros and cons

  • Where it wins
    • Validates ROM and patch source CRC32 checksums
    • Adapts iNES headers and supported ROM revisions automatically
    • Downloads the patched result as an NES file
  • Where it doesn't
    • Supports BPS patches only
    • Focused on the NTSC version of Super Mario Bros. 2
    • No batch patching or command-line workflow

BPS Super Mario Bros. 2 Patcher fact sheet, pricing and score →

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