Blizzard Really Likes Cows Too
Just like all good cake, the cow level is a lie. Or at least, it started as one.
When the original Diablo came out, there were rumors that you could get access to a special level by clicking on a cow. The cow would open a portal and give you access to a special cow level. Turns out Diablo had no cow level, but fans have since tried to find a secret bovine level of some sort in every Blizzard game.
Blizzard eventually responded to the efforts with, “There is no cow level.” Yet, there would be hidden references in their games still. Their statement turned up as a cheat code in StarCraft, and in Call of Duty along with the sequel, you can enable cheats by accessing the command console and changing ‘ThereisaCow‘ into 1337.
There was eventually an official cow level in Diablo 3 known as the Moo Moo Farm, which required players beat the game and then use certain items to create a portal to this level.