Operation: Outbreak Idle

Recorded Steam activity

GaugeDB’s latest recorded Steam player count for Operation: Outbreak Idle is 2 concurrent players (23 Oct 2026, 02:53). Its recorded 24-hour peak is 2 players. The highest count in GaugeDB’s collected history is 10 concurrent players on 05 Oct 2026.

Concurrent Steam players, not daily or monthly active users. Console and other launchers are excluded. Peaks cover GaugeDB’s recorded history.

Command automated military defenses, upgrade your fortress, and survive massive zombie waves in this action-packed idle defense game. Build powerful defenses, unlock upgrades, and hold the line against endless undead hordes.

Steam store description