Replication Data and Code for “When Platform Ratings Are Not Commensurable: An Architecture-Aware Audit of Cross-Source Evaluation Data”

The study examines the information-quality implications of integrating cross-source platform ratings using a candidate frame of 10,590 Steam games released between 2015 and 2025, including 984 titles with Steam-embedded Metacritic scores. The analyses cover: (1) selectivity in Steam-embedded Metacritic availability; (2) product-level calibration and observed dispersion differences between Steam recommendation shares and embedded Metacritic scores; (3) ordinal correspondence and percentile-rank displacement; (4) pairwise ordering reversals with a Steam-side Wilson-interval reliability screen; and (5) robustness and linkage-sensitivity analyses.

The package is intended to support transparency, reproducibility, and reuse of the study's architecture-aware commensuration audit. The underlying variables were collected from publicly accessible Steam endpoints and Steam appdetails metadata. No private user-level data or personally identifiable information are included.