Rockstar’s GTA 6 Site Exposes Browser Divide as Firefox Drops Scroll Animations Chrome Renders Natively
Rockstar Games’ official GTA 6 website delivers rich scroll-driven animations in Chrome but renders as a static page in Firefox — a gap rooted in uneven browser support for an emerging web standard.
A video shared to Reddit’s r/browsers forum by user T_rex2700 shows the same page side by side in both browsers, with Chrome producing fluid motion as users scroll and Firefox displaying no animation at all.
What Is Driving the Gap
Scroll-driven animations are CSS animations — Cascading Style Sheets, the code that controls visual presentation on web pages — tied to scroll position rather than a fixed timer.
Google's Chrome developer documentation says Chrome added native support for the feature in version 115. That gave web developers a stable, built-in tool to build scroll effects inside any Chromium-based browser — which includes Chrome, Edge, and Brave.
Firefox has not reached the same point. Mozilla's MDN Web Docs list scroll-driven animations as experimental in Firefox release builds, with the feature locked behind a developer flag called `layout.css.scroll-driven-animations.enabled`. Some parts of the specification remain unsupported by default.
Developer Math Favors Chrome
Several web developers who commented on the Reddit thread said the time cost shapes the decision more than any preference for Google.
One developer said building scroll effects for Chromium takes minutes, while achieving the same result in Firefox can require hours of debugging engine-specific quirks. Another said cross-browser compatibility sometimes means tracking down proprietary Google APIs — a frustration that cuts in both directions.
Still, Firefox advocates in the thread argued Rockstar’s team leaned on Chromium-specific implementations rather than sticking to open standards that both browsers could handle.
That argument runs into a hard commercial reality. StatCounter global browser data places Firefox’s desktop market share at roughly 2 to 5 percent worldwide. For a studio spending heavily on a marketing site, optimizing for that slice of users carries limited financial return.
Workarounds Exist but Fall Short
Firefox Users Can install a browser extension that spoofs a Chromium user-agent string — essentially telling the website that Firefox is Chrome — which can trigger the animation code.
Rockstar’s site also includes an option to force animations manually. Even so, neither workaround reproduces the performance Chrome delivers natively, according to users in the thread.
The episode reflects a pattern web developers have flagged for years: high-budget marketing sites target the dominant browser first, and sometimes exclusively.
Chrome held roughly 65 percent of the global desktop browser market as of early 2025, according to StatCounter, giving developers little reason to treat any other browser as a primary testing target.
