Diablo III celebrates 3rd anniversary with cows and their secret level

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This is a very mooving birthday celebration.

Blizzard’s action role-playing game Diablo III is three years old today, and the developer is celebrating with a bunch of cows. Specifically, special Treasure Goblins will leave behind portals to a world filled with evil, warrior bovines starting today and until May 21.

Note that this is only for the PlayStation 4, Xbox One, and PC versions of the game. PlayStation 3 and Xbox 360 owners will instead get a 100 percent increase to experience points and gold during the anniversary event.

The Secret Cow Level is actually an old joke in the Diablo series. Fans originally thought that one existed in the original game, which was only a rumor. However, Blizzard did add a Secret Cow Level to Diablo II. Now, the cows are finally coming to Diablo III.