Apple’s latest beta of Reality Composer Pro 3, the tool developers use to craft Vision Pro spatial experiences, contains dozens of references to the defunct game engine project known as The Machinery. Analyst Nicolás Alvarez identified at least 40 string mentions linking the Apple binaries to the engine’s codebase, a finding later corroborated by MacRumors in its analysis this week.

The Machinery was built by Our Machinery, a studio of former Bitsquid engineers whose unconventional asset‑management system, dubbed “The Truth,” unified objects, dependencies and editor state in a database‑driven architecture. Elements of that system—reusable prototypes, live editing, and dependency tracking—appear in the new Reality Composer Pro, suggesting Apple adopted or licensed core concepts for its spatial toolset development now.

Tricia Gray, co‑founder and former CEO of Our Machinery, now appears on Apple’s spatial computing developer tools team, per her LinkedIn profile. Whether Apple purchased the engine outright or merely integrated its architecture remains unclear, but the embedded identifiers confirm that concepts from a vanished project have resurfaced inside Apple’s Vision Pro pipeline, directly shaping creator workflows for today's developers.