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The Secret Cow level is a thing of mystery in Diablo 4. Fans expect it to exist follow the success of the Diablo 2 Secret Cow Level.
Despite Blizzard denying a Secret Cow Level exists in Diablo 4, all evidence points to the fact there is one but perhaps it has not been revealed in the current game iteration.
Secret Cow Level Discoveries
The Items
When the beta released and datamining began[1] on the game there were strange objects and a location that stood out to be meaningful and possibly related to cow level.
The four items in particular were:
The datamining text from the string files read:
“quest_world_secretcellar.stl”: {
“Name”: “Unknown”
},
“item_world_secretcellar_key.stl”: {
“Name”: “Strange Key“,
“Description”: “A large metal key. Though it appears ordinary, you feel that it has some kind of power.”,
“Flavor”: “Who knows what this could unlock?”
},
” tem_world_secretcellar_relic_1.stl”: {
“Name”: “Bloody Wooden Shard“,
“Description”: “A worn, bloodstained chunk of wood with tattered leather straps. The letter \”W\” has been crudely carved on one side.”,
“Flavor”: “Though its purpose is lost to time, this was once an object of great significance.”
},
“item_world_secretcellar_relic_2.stl”: {
“Name”: “Musty Tome“,
“Description”: “The tattered leather binding of an old tome. The deep blue dye has faded with age, and all of the pages have been torn out.”,
“Flavor”: “Though its purpose is lost to time, this was once an object of great significance.”
},
“item_world_secretcellar_relic_3.stl”: {
“Name”: “Intricate Metallic Fragment“,
“Description”: “A metallic fragment of unknown origin, still humming with magical energies. It appears to be part of some ancient device.”,
“Flavor”: “Though its purpose is lost to time, this was once an object of great significance.”},
The Fountain
Another area also stood out, the fountain in Ked Bardu which has four oxen on each corner, one of which players can interact with while the other three remained unclickable.
The test on the oxen that can be clicked reads:
"The Oxen Gods stand as guardians to this sacred fountain. It is said that one who presents a worthy offering cleansed in these waters may gain their blessing.”
The Slaying of Cows
Following the release of the 1.2.0 patch, the community[2] carried on the research and discovered that killing cows would unlock the next phase.
Based on the research, it was discovered that killing 666 cows would reward players with one of the three mysterious items previously discovered in the game files. However, it matters where you kill the cows to gain the items.
- Musty Tome - Last cow killed in Scosglen
- Bloody Wooden Shard - Last cow killed in Hawezar
- Intricate Metallic Fragment - Last cow killed in Dry Steppes
There are only a few locations where cows are present and and it's best to use an optimal route to maximise on as many cow kills as possible as quickly as possible
See the Diablo 4 Secret Cow Level Farming Locations
Counting Kills
There is a limit of 666 kills per character. Once the 666 kill is made and the item is dropped, a countdown of 666,666 seconds is applied to that character which means that character cannot farm another of these items for 7.7 days.
Players must use second/third character to continue farming the remaining two items.
It does not matter what level your character is or which World Tier you are playing on to obtain these items.
Cleansing the Items
One all three of the items have been obtained, the need to be taken to the fountain in Ked Bardu. Inside the fountain there is also a tablet you can interact with which was also an indicator to the slaying of cows:

