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Individual prerelease counts require verified game access. GaugeDB can record a count if Steam publishes one in its public chart, or when collection becomes available after release.
No Steam player count has been recorded for Vivaria yet.
Concurrent Steam players, not daily or monthly active users. Console and other launchers are excluded. Peaks cover GaugeDB’s recorded history.
Husbandry record-keeping for serious keepers. Track weights, feedings, sheds, and environmental readings for every animal in your care, with everything stored on your own machine. No subscription ever required.
Steam store description