So, based on the mod that replaces Zombies with Mummies and Crimson Necropolis, I created my own version of an enhanced Necropolis! For now, it's very rough and unbalanced, but I decided to upload it here.

Latest version:
https://yadi.sk/d/PDznKvtPkH48G

List of changes:
1) Skeletons, for now, remain unchanged.
2) Zombies have been replaced with Mummies.
3) Ghosts now hunt in packs.
4) Vampires have gained the "Large Creature" ability and a couple of additional skills.
5) Liches, on the contrary, have been weakened, and their abilities have been slightly changed.
6) Undead remained the same, but their enhanced counterparts have gained a couple of abilities.
7) Dragons have been replaced with Knights of Darkness, Death, and Ice.
8) As neutral creatures, you can encounter Dracolichs and Blood Dragons (yes, they are level 8)... A little "hello" from the third game, so to speak.

P.S. There may be numerous bugs, typos, and so on.
P.P.S. And don't complain about the lack of balance; it's nervously smoking a hookah somewhere with the mages.

Download link (v1.3):
https://yadi.sk/d/KWgsSHxQi87EQ

Updated!
Changes:
1) The appearance of Mummies has been slightly reworked.
2) Dragons can now be raised through Necromancy for 1000 Necro-energy.
3) Rotting Zombies (Neutral) can also be upgraded into dragons, naturally for a small fee of 20 Mercury, 5 of all resources, and 20,000 gold per creature. Requires a fort on a hill.
4) There may be side effects from the latest changes.
5) The cost of raising creatures through Necromancy has been doubled.

Download link (v1.4):
https://yadi.sk/d/STNbk8Epi92pp

Updated!
Changes:
1) Skeletons have received a small buff.
2) Mummies have been slightly buffed.
3) Spirits have been weakened.
4) Master Liches have learned to cast a mass debuff spell but have lost damage.
5) Knights are now more balanced with each other.
6) Skill descriptions have been adjusted, and the models of knights and dragons on the map have been fixed.

Download link (v1.5):
https://yadi.sk/d/uBOpRuOGiFNtz

Update, probably the last one!
1) The icon for the Ice Knight has been changed.
2) Rotting Zombies have been replaced with Bone Collectors.
3) The cost of Dead Dragons in all resources, except Mercury, has been increased.
4) The ability to raise Bone Collectors through Necromancy has been added.
5) Download, install, and you'll find out the details!

Download link (v1.6):
https://yadi.sk/d/6GeWdvfriNm6J

Turns out there was still something to add...
1) A third dragon upgrade has been introduced. (Requires a fort on a hill)
2) The Temple of the Underworld is now tied to the Tears of Ash.
3) The Abandoned Cathedral is no longer linked to the Temple.
4) Knight growth has been reduced by 1.
5) Expect minor updates...

Download link (v1.7):
https://yadi.sk/d/DvFIDMGQjMjjK

Meet version 1.8!
1) The mechanics of Dark Magic have been changed. Now, the strength of magic affects not only the duration but also the power of the spell's effect.
2) The growth of creatures of levels 1-5 has been significantly reduced.

Download link (v1.8)
https://yadi.sk/d/PDznKvtPkH48G