Before a game can actually ship on a console storefront, it has to pass certification (sometimes called "cert," or platform-specific compliance testing) — a platform holder's own technical review process, separate entirely from the age-rating process covered elsewhere in this category, and separate from the publisher's own internal QA.

Certification checks a long, fairly specific list of platform-mandated technical requirements: does the game handle a controller disconnecting mid-session without crashing, does it save progress correctly and recover cleanly from a forced power-off, does it meet the platform's required loading-time and performance targets, does it correctly implement the platform's own achievement or trophy system and account-linking requirements. None of that is about whether the game is good — it's strictly about whether it behaves correctly within the platform's own technical rules.

A game that fails certification doesn't ship until the specific issues are fixed and it's resubmitted — which is a big part of why release-week delays sometimes happen even after a game's launch date has been publicly marketed and its build is otherwise finished: a failed cert pass, sometimes over a single specific requirement, can push a release back with very little public explanation of exactly what failed.

Each platform holder runs its own separate certification process with its own specific requirements, which is a real, recurring cost for a multi-platform release: passing certification on one console doesn't carry over to another, and a studio shipping the same game across multiple platforms has to clear each one's process independently, on its own timeline, even when the underlying game is otherwise identical.

Certification exists to protect the platform's own reputation for consistency and reliability as much as to protect players from broken games — a platform holder has a direct interest in every game on its storefront meeting a baseline technical standard, since a wave of crashing or poorly-behaved games reflects on the platform itself, not just on the individual studios that shipped them. It's a real, largely invisible gate nearly every console release has to clear, whether or not players ever hear it happened.