Class default

Realms are how a singleton world scales: one process per realm, all sharing a database. These are the site-admin views of the multiplayer realm records.

Declare how many server processes a build may run at once: singleton, replicated, pooled, serverless, or static. Re-clamps the stored replica shape and is honored by the next deployment.

Resize the Container App behind a build. Replica bounds are enforced server side against the build's capacity model, so a singleton world cannot be given a second replica. Pass acknowledge_outage when deliberately setting min replicas to 0 on a singleton or replicated deployment, which takes the game offline.

Update the warm/spare/ceiling shape of a matchmaker managed instance pool. Rejected for any build whose capacity model is not "pooled".