In 'Call of the Unknown', players assume the role of Max, a disgraced former private investigator who receives a mysterious phone call at 3 AM. The voice on the other end reveals a web of conspiracy tied to a long-abandoned case. As Max navigates through a series of increasingly surreal and dangerous conversations, the player must make critical decisions that shape the outcome of the investigation and reveal hidden truths. Characters come to life through rich dialogue and your choices determine whom to trust, what leads to follow, and ultimately, if you can unravel the mystery or become a victim yourself.