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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 PROTOCOL: Zero-day yet.
Concurrent Steam players, not daily or monthly active users. Console and other launchers are excluded. Peaks cover GaugeDB’s recorded history.
Dive into a brutal isometric Action-Roguelite set in a cyber-apocalyptic world. Master fast-paced Hack'n'Slash combat during intense 5-to-8-minute incursions. Face infected hordes, optimize your build, and break the loop. Death is part of the protocol.
Steam store description