We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.
This is a fiction/fan codex: entries describe an in-universe canon. Our audits check canon and internal consistency — external fact-checking does not apply the way it does on real-subject codexes.
Last full accuracy audit: 2026-08-20 · 30 entries checked · 11 flagged · 20 issues confirmed · 11 corrected · 9 still open
Gordon Freeman — The G-Man does not explicitly claim to have employed Gordon 'across different timelines' in the games; this phrase is not supported by canon dialogue and is an invented claim.
Barney Calhoun — The entry states Barney is 'first seen wearing an orange prisoner jumpsuit before revealing himself as a CP officer' in 'A Red Letter Day,' but in canon he is first seen already wearing a Civil Protection uniform in that chapter.
Barney Calhoun — The entry claims Barney 'never directly assisted Gordon Freeman in the facility—he is only heard over the intercom and is not encountered in the tram sequence,' but in Half-Life he is encountered in person in 'We've Got Hostiles' where he gives Gordon a crowba
Headcrabs — The entry states that Headcrabs inject a 'larval parasite' into the host's brain stem, which is incorrect; the Headcrab itself attaches and controls the host directly.
Vortigaunts — The entry states that Vortigaunts arrived on Earth following the Resonance Cascade, but in canon they were already present on Earth during the Black Mesa Incident.
Vortigaunts — The entry claims the Vortigaunts' former master was the Nihilanth, but this oversimplifies the hierarchy; the Nihilanth was itself a slave to the Combine, and the Vortigaunts were enslaved by the Combine on Xen before the Nihilanth's rule.
Nihilanth — The entry states that the Nihilanth fled to Xen after the Combine enslaved its kind and the Vortigaunts, but in canon the Vortigaunts were already native to Xen and enslaved by the Nihilanth itself, not fellow refugees.
Nihilanth — The entry claims the Nihilanth's death leaves the dimensional gates intact, but in the game the Nihilanth's death destabilizes and closes the portal to Xen, with Gordon escaping through a one-time portal.
The Citadel — The claim that the Citadel's destruction 'completely severing the Combine's connection to Earth for the duration of Episode One and Two' is inaccurate; the Combine maintain a connection through the superportal, which is only closed at the end of Episode Two.
Strider — The Strider is first encountered in Half-Life 2 Chapter 6: Highway 17, not Chapter 5: Black Mesa East.
Strider — The Strider's primary weapon is not called a 'Strider buster' or 'pulse cannon'; 'Strider buster' refers to a player weapon used against Striders.
Xen Breach — The Xen Breach did not unleash an 'alien apocalypse' across the entire desert; the incursion was largely contained to the Black Mesa facility and its immediate surroundings.
Xen Breach — The resonance cascade was caused by an anomalous crystal sample from Xen being analyzed by a laser spectrometer, not simply by 'Earth's laser technology' as a general concept, and the crystal is not described as a unique, named crystal.
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