Welcome to the Hallway Agency, a top-secret government department tasked with safeguarding "The Hallway"—a mysterious, cosmic passageway that connects all realities and timelines. The Hallway has always been a crossroads for countless entities, some of which are far from friendly. For years, the Agency has captured and controlled these entities, keeping the Hallway secure. But now, the unthinkable has happened—these entities have escaped and are wreaking havoc.

Your mission is clear: Patrol the Hallway, investigate disturbances, and report any anomalies.

Green: All clear.
Red: Anomaly detected.

And one more thing: Stay alive.