GTA BOOM Demand Index

The frozen core asks pre-order status; edition, channel, console and date when applicable; the main objection when not pre-ordered; expected GTA+ status; console-purchase intent; country; GTA tenure; and recent GTA Online play. The survey is account-recognized but never account-required. GTA 6 is currently announced only for PS5 and Xbox Series X|S; no PC version has been announced.

The primary series is a repeated cross-section of the latest valid complete response per identity in each Monday–Sunday UTC window. It includes authenticated and anonymous respondents. It is standardized to Week 1's frozen composition across placement, region, and GTA-tenure cells. This is composition standardization against GTA BOOM's own baseline, not population post-stratification.

Week 1 cells below 30 valid responses collapse first across tenure within placement-region, then across region within placement, then to a global residual. That mapping and the Week 1 weights freeze. If a frozen cell has zero valid responses in a later week, the primary index is withheld rather than imputed.

A valid response completes the applicable branch, passes predeclared integrity checks, and resolves to one canonical response per identity and window. Respondents may revise while a window is open. Revisions remain in an immutable audit trail; only the latest valid complete state at close is used. Closed weeks do not absorb late responses.

Each release uses 2,000 deterministic identity-cluster bootstrap replicates and a percentile interval. Resampling by canonical identity avoids treating repeat observations as independent. Confidence intervals quantify within-sample estimation variability only. They do not capture self-selection, coverage or non-response bias.

Every release reports authenticated and anonymous sample shares, each cohort's indexed sensitivity, the unstandardized indexed sensitivity, and differences from the primary series. From Week 2, a separate opportunistic panel reports retention, attrition, and exact matched denominators among returning authenticated respondents. Transition cells appear only with at least 30 matches. It is never described as the same people every week.

This is a self-selected audience of core GTA readers. It is likely to overstate pre-order propensity. Raw levels are not population estimates. The index measures change within a composition-standardized GTA BOOM respondent series, not market-wide unit sales.