Case study

rrt2-decomp: a Rust reimplementation of Railroad Tycoon II

rrt2-decomp reimplements Railroad Tycoon II in Rust after studying the Platinum executable, game data and simulation rules. Its crates parse PK2 archives, LAD sprites, maps and saves, while a differential harness runs original functions for comparison; the new game uses the player's installed assets and a wgpu renderer.

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: 19
Last commit: 2026-11-02
Language: Rust
License (GitHub): GPL-3.0

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 copy of Railroad Tycoon II is required for game assets and original-data tests.
Prerequisites: Building requires the pinned stable Rust toolchain; Linux builds also require clang and mold.
Limits: The author reports partial decoding of some map and save structures and ongoing classification of executable functions.
License: GPL-3.0-or-later License.

Cite

BibTeX

@misc{rrt2-decomp-case,
  title = {{rrt2-decomp: a Rust reimplementation of Railroad Tycoon II}},
  howpublished = {\url{https://github.com/pedryvo/rrt2-decomp}},
  url = {https://github.com/pedryvo/rrt2-decomp},
  urldate = {2026-11-07},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/rrt2-decomp-case/}}
}

Plain text

rrt2-decomp: a Rust reimplementation of Railroad Tycoon II. https://github.com/pedryvo/rrt2-decomp (accessed 2026-11-07). Awesome REA entry: https://awesomerea.org/resources/rrt2-decomp-case/

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Primary sources

README.md GitHub · pedryvo/rrt2-decomp · Revision 2e29341
Cargo.toml GitHub · pedryvo/rrt2-decomp · Revision 2e29341