Probably many games do, but there is often an external master server that the local server fetches data from e.g. Team Fortress 2's local server calls out to a master server that tracks which items you have, Counter-strike: Global Offensive calls out to a separate master server that tracks your level and stats etc.
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Probably many games do, but there is often an external master server that the local server fetches data from e.g. Team Fortress 2's local server calls out to a master server that tracks which items you have, Counter-strike: Global Offensive calls out to a separate master server that tracks your level and stats etc.