http://www.planetdiablo.com/chaosempire/
It was only made I think for version 1.10, but I think it can also work with version 1.11 of Diablo II. To download it, go to Download, then click the free download link to come to a list of mods. Then ChaosEmpire current, and 769 is the one.
Chaos Empire actually adds a lot of things to the game, and some of them you'll laugh at. Let's say this;
- Kinder Surprises can drop. Transmute them in the cube to gain a random item.
- Dolls can drop. Find a Doll Stash and transmute them to power up the Doll Stash (You need quite a lot of dolls to start getting a lot of powerups)
- You can find a unique charm after killing a boss in the Den of Evil called Cold-(something). Transmute it in the cube along with one of the Horadric Scrolls to gain a personal teddy. 1 to all skills, and records a lot of things you've done.
- At the start of the game you get a huge block. Put it in the cube and transmute it to gain an entire special set for your class called the 'Thank Saying'. It's a helpful starting set.
- Oils can increase the stats of armors/weapons. Some can make items indestructable too.
- Special items appear that will transmute when right clicked-
= A monster heart turns into a Zod Rune
= A flag turns into a Valuable Elixer (Sells for millions on gamble screen)
= A tail turns into a funny item called (What happens when I smoke this shit), which can either be sold, or right clicked and you run almost twice/three times as fast for a period of time.
And a lot more custom things. I can't list them all. But Diablo I enemies also appear like King Leodric and The Butcher. There's also a custom quest in the game which takes a long while to do, and it's a bit longer to complete Acts 2, 3 and 4. Trust me, you might like it.