Lifeline: Flatline

About

Lifeline: Flatline is a text-based survival game where you guide a character named Wynn through a nightmare scenario. Trapped in a derelict medical facility, she sends updates as she explores dangerous corridors and solves puzzles. You reply via preset options that determine her actions. The tension builds as unseen threats stalk her, and wrong choices lead to sudden deaths. The game relies on urgency and quick decisions rather than complex mechanics. The series is known for its tight pacing and high-stakes branching narratives. Flatline expands on that formula with more environments and endings. Players often mention the adrenaline rush from time-sensitive choices and the satisfaction of uncovering secrets through repeated playthroughs. With over 1 million copies sold across its entries, it’s a polished example of interactive horror that fits into short sessions.