Case study

Scion: reimplementing the SimCity 4 Gonzo/Rizzo framework

Scion is a reference implementation of the Gonzo/Rizzo framework used by Maxis. It aims at the version in SimCity 4 Deluxe Edition. The README also names SimCity 3000, The Sims 2, and Spore as games that used the framework, and says identical machine code is a stretch goal.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-07
Evidence class: C2 code & docs, no demo or download

Stars: 65
Last commit: 2026-11-09
Language: C++
License (GitHub): LGPL-2.1

GitHub data as of 2026-11-10

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Evidence

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

How evidence classes are assigned

Requirements & limits

Windows. Project files are for Visual Studio .NET 2003. Build STLport with nmake -f vc7.mak from src/stlport/src, then build the framework solution.
License: GNU LGPL 2.1 or any later version.

Cite

BibTeX

@misc{scion-maxis,
  title = {{Scion: reimplementing the SimCity 4 Gonzo/Rizzo framework}},
  howpublished = {\url{https://github.com/nsgomez/scion}},
  url = {https://github.com/nsgomez/scion},
  urldate = {2026-11-07},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/scion-maxis/}}
}

Plain text

Scion: reimplementing the SimCity 4 Gonzo/Rizzo framework. https://github.com/nsgomez/scion (accessed 2026-11-07). Awesome REA entry: https://awesomerea.org/resources/scion-maxis/

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Primary sources

README.md GitHub · nsgomez/scion · Revision 67bf1c4