The Flock is a competitive horror game attached to a ticking clock. Every player is a monster collectively called the Flock, and they’re all after the Artifact, a light-filled item that transforms whomever holds it into a new creature. The goal is to hold the Artifact for the longest stretch of time, fighting off Flock monsters with the object’s light.

Here’s the tick-tock twist: For every player that dies, the Flock’s population number drops by one. When the population hits zero, no new players will be able to purchase the game. Only people who already own The Flock will be able to participate in the “climactic finale,” and once that’s done, the game will go offline permanently. No one will be able to play it again.
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https://www.engadget.com/2015/07/17/the-flock-horror-game-multiplayer/