https://www.polygon.com/2018/6/3/17422398/evolve-server-shutdown-september-2018-faq

Evolve, the 4-on-1 monster-hunting shooter Turtle Rock and 2K Games launched in 2015, is closing down several features this September, 2K Games announced on Friday.

The closures effectively spell the end of the game, though it will remain playable over peer-to-peer connection (Evolve is multiplayer-only) through Legacy Evolve, which was set up after Turtle Rock ended support for the title in October 2016.