Loading game…
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 Call For Backup yet.
Concurrent Steam players, not daily or monthly active users. Console and other launchers are excluded. Peaks cover GaugeDB’s recorded history.
Defend USA in a post-apocalyptic war against ghouls and commies. While some are in control of combat drones, one person becomes the commander. Ground forces rely on the commander's air support, but he can’t see the battlefield. Communication is crucial! Single-player campaign included!
Steam store description