Diablo 4 players are stumbling into Whimsyshire, and it is gloriously ridiculous
A nightmare filled with rainbows, angry Cuddle Bears, and a surprisingly unique unicorn called Neigh'Relle.
Among all the weird things Diablo 4 Season 15 has brought back from previous games, this is probably the best one. Apparently, the anniversary celebrations were not complete without rainbows, unicorns, and extremely angry teddy bears.
Yes, players have started stumbling into Whimsyshire, the famously ridiculous secret area from Diablo 3.
The area is exactly as silly as you would expect, with unicorns, Cuddle Bears, Happy Clouds, and Candy Jars scattered throughout it. There is even a unicorn boss called Neigh'relle waiting inside the Den of Whimsy. And I know the name sounds familiar, but do not trust it, this one is NOT your friend!
And unlike most of Diablo 4's content, you do not seem to be able to just select Whimsyshire from a menu and head there whenever you want.
How Do You Get to Whimsyshire?
There are currently a few ways to open a portal to Whimsyshire, but not all of them are equally reliable.
The First Is Through Waking Nightmares
Since we did not manage to get in there ourselves yet, we went through all the Reddit posts and videos about it, and from what we were able to gather, it seems that completing a Waking Nightmare can cause a portal to Whimsyshire to appear. So far, this appears to be a completely random occurrence, with no known way to deliberately trigger it.
Iridescent Goblins
The second way to enter Whimsyshire seems to be by killing Iridescent Goblins. They can spawn during Helltides or other content, and killing one can apparently cause a Whimsyshire portal to appear.
This method is pretty random as well, since it is not yet clear exactly how the Goblin encounter works or if the portal is guaranteed.
Liquid Rainbow
Apparently, no one is questioning why we are drinking random, very suspicious, rainbow colored drinks. But anyway, it does grant you a direct way into Whimsyshire. I wonder why...
So if you do not fancy waiting for a portal to randomly appear, there is an option called drinking Liquid Rainbow.
This consumable can apparently drop randomly anywhere in the world, so there does not seem to be a specific activity or location you need to farm for it. Still pretty random, but once you have one, simply consume it, and a portal to Whimsyshire should open right where you are.
That makes 
Liquid Rainbow the most reliable way to deliberately visit the secret area, assuming you manage to find one.
What Is Inside Whimsyshire?
If you have played Diablo 3, the concept should be familiar. Whimsyshire is essentially Diablo's answer to the question nobody asked: what if Sanctuary was covered in rainbows and populated by murderous unicorns?
The Diablo 4 version contains:
Unicorns
Cuddle Bears
Twinkleroot
Happy Clouds
Candy Jars
Armor Gifts
Weapon Gifts
Soup
Resplendent Soup
There are also named unicorns called Donut and Lore-ass, because apparently Blizzard decided the zone was not silly enough, and these two needed to be made fun of.
And then there is Neigh'relle in the Den of Whimsy...
The boss is linked to the "Sparkling Happiness and Rainbows" quest, so you will have to fight your way through her.
Whimsyshire became one of the series' best and most demanded silly content, and it is honestly nice to see that they finally added it. Yes, they promised Diablo 4 was Darker, and they would never add anything like it, but who does not need a little sparkle and wonders when your world is constantly being overthrown by demons.
At this point, if you see something glowing suspiciously in Sanctuary, it might be worth investigating. It could be another secret. Or it could just be a very angry teddy bear... Or worse.