# 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. - Type: Case study - Targets: Game - Category: Independent reconstruction cases - Relationship: Independent reconstruction project - Sources reviewed: 2026-11-07 - Added to the catalog: 2026-11-09 - Original resource: - Primary source: - Catalog page: - Record JSON: - Chinese version: [简体中文](https://awesomerea.org/zh/resources/scion-maxis/index.md) ## 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. ## Primary sources 1. ## More in Games - [Scooby-Doo Mystery: a reconstructed Sega Genesis engine](https://awesomerea.org/resources/scooby-doo-mystery-genesis-case/index.md) · Case study - [ScummVM: replacement executables for classic adventure games](https://awesomerea.org/resources/scummvm-engine-case/index.md) · Case study - [SDLPAL: reimplementing Legend of Sword and Fairy with SDL](https://awesomerea.org/resources/sdlpal/index.md) · Case study - [SDLPoP2: rebuilding the Prince of Persia 2 DOS engine](https://awesomerea.org/resources/sdlpop2-prince-of-persia-2-case/index.md) · Case study - [Seedra: reimplementing Minecraft Legacy Console Edition world generation](https://awesomerea.org/resources/seedra-case/index.md) · Case study - [sekiro-rs: a Rust and Bevy reconstruction of Sekiro](https://awesomerea.org/resources/sekiro-rs-case/index.md) · Case study ## About this entry The description was reviewed against primary sources. Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.