The Secret Cow Level

Diablo II · PC · 2000

A hidden level full of bipedal, club-wielding cows — created by Blizzard as a direct answer to a persistent fan rumour from the first Diablo that a secret cow level existed. The joke became one of gaming's most famous easter eggs.

After the original Diablo released in 1996, a rumour spread that clicking repeatedly on a cow in the town of Tristram would open a secret level. It was never true, but the legend was so widespread that Blizzard turned it into a real feature in the sequel. In Diablo II, players can open a portal to the Secret Cow Level by combining Wirt's Leg — an item recovered from the first game's deceased character Wirt — with a Tome of Town Portal in the Horadric Cube while standing in the Rogue Encampment after defeating the final boss. The level itself is a vast field overrun by "Hell Bovines": cows that walk upright, carry polearms, and attack in enormous herds. Their leader is the Cow King. The level is genuinely dangerous and rewarding to farm, but its appeal is mostly comedic — a developer self-aware enough to immortalise a debunked fan myth. The cow level became so iconic that later Blizzard games and patches repeatedly referenced it, and "there is no cow level" became an enduring in-joke across the series.