Case study

smw: a Super Mario World engine reimplementation

smw reimplements Super Mario World's game logic as a native program using levels and images extracted from the user's ROM. It also runs an emulated version in the background, compares RAM state every frame, and saves a snapshot when the states diverge.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 651
Last commit: 2023-08-16
Language: C

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a download method observed; no demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: A user-provided USA Super Mario World ROM named smw.sfc is required to extract resources.
Prerequisites: The documented Windows build uses Python, TCC, and SDL2; other platform instructions are provided separately.
License: MIT License.

Cite

BibTeX

@misc{smw-case,
  title = {{smw: a Super Mario World engine reimplementation}},
  howpublished = {\url{https://github.com/snesrev/smw}},
  url = {https://github.com/snesrev/smw},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/smw-case/}}
}

Plain text

smw: a Super Mario World engine reimplementation. https://github.com/snesrev/smw (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/smw-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · snesrev/smw · Revision eae20c6
LICENSE.txt GitHub · snesrev/smw · Revision eae20c6