A tweet from Evolve announces the Windows version of the Evolve "big alpha" is now live on Steam, saying: "PC / Steam users - Evolve #BigAlpha is now open! Feel free to stream, tweet and screenshot your game." Turtle Rock follows this with another tweet offering a tip for invitees having trouble with this. This update has further details for participants as well as a code that should still permit entrance into the alpha. Here's a refresher on this asymmetric shooter:

In a savage world of man vs nature, are you the hunter or the hunted? The creators of Left 4 Dead, Turtle Rock Studios, bring you Evolve, the next-generation of multiplayer shooters where four hunters face-off against a single, player-controlled monster. Stalk your prey, execute your attack and prove you are the apex predator in adrenaline-pumping 4V1 matches.