[UPDATE] The Evolve alpha period on PlayStation 4 has been delayed due to network difficulties.

“Following the recent PS4 2.00 firmware update, we are experiencing difficulties with the Evolve Big Alpha on PlayStation 4,” a 2K representative told GameSpot. “As a result, the test on PlayStation 4 is postponed. PlayStation and 2K are working together on a resolution. Evolve’s closed alpha test is still playable on Xbox One and PC.”

The original story is below.

The “Big Alpha” for 2015’s much-anticipated 4v1 shooter Evolve comes to PlayStation 4 and PC today, following its launch yesterday exclusively for Xbox One.

The alpha will be available to download on PS4 and PC today starting at 9 AM PDT / 12 Noon EDT / 4 PM GMT. If you preordered a copy of the game, you’re guaranteed a spot. The alpha ends on Sunday, November 2.

2K Games and developer Turtle Rock Studios have also released a new “Kraken Interactive Trailer” for Evolve, which you can see below. It allows you to see a match unfold from five different perspectives.

Evolve was originally targeted to launch this year, but it was recently delayed to February 10, 2015. The game’s developer, Turtle Rock, also created the Left 4 Dead series. In Evolve, four players fight together to take down a fifth player, who takes on the role of a monster with unique (and deadly) attributes.

Evolve was originally a THQ game, but when the company went bankrupt, 2K Games parent company Take-Two Interactive bought the game during an auction for $10.9 million. For more on Evolve, check out GameSpot’s previous coverage.

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