Hades

Hades is the unique, man made world of Greek Mythology. Hades is linear for the a short bit, but has no set path to follow after crossing through its gate. Although it can be accessed through a portal, it can also be accessed through rare structures that spawn in the Overworld: Hades entrances. Hades is presented as an area with five rivers that converge at a swamp in the middle. These rivers divide the multiple areas of the map. Small ruin structures appear on the map, and are sources of Mythic item. Note that many chests found in this map are, in reality, Pandora's box.

General layout and geography
Hades is a particularly rocky dimensions with canyon-esque features. It is made up of a series of shelves, plateaus, buttes, crevasses, canyons, tunnels and arches, with the occasional vast open field. Hades is composed of five main regions, generally separated from each other by one of the five rivers. Those five rivers converge at a great marsh in the centre, part of the Stygian Marsh region.

Erebus
The region where the portal is located, and therefore the first region the player will come in contact with. It has a large but mostly linear tunnel complex. That is where the portal will be located, in a cave above the styx, supported by silver pillars. Erebus has amongst the tallest plateaus of the map. This region contains various plants and rocks generally only found in Nidavellir, like darkstone, dark moss, dark vines, and darkwood trees on the surface. Erebus partially overlaps with the Styx, and these parts of the Styx are underground.

Elysium
A vast open field of green, with dense vegetation, with a large lake which includes the island of the blessed. Chrysomallos sheep will spawn there. Elysium has much more adamant ore than the rest of Hades, and there is even more of it on the island of blessed.

Asphodel Meadows
A vast open field filled with Asphodel and dull grass.

Tartarus
Tartarus has a massive underground complex very deep underground, which can be accessed by following the Phlegethon river to a deep hole underground. The underground parts of Tartarus are filled with hellstone, magma, netherack and obsidian, and are the location of Titans and furries. The surface of Tartarus has charred trees, fire bush, crevasses filled with lava and pools of blood.

Stygian marsh
a massive marsh in the middle of hades, with the same water as the Stx itself.

The Acheron
Separates Erebus from a generic area which leads to Elysium. It is a deep gorge for most of its course. When the player enters Hades, he must pass it to access the rest of the map. On its eastern shore stands Charron, who will teleport the player across in exchange of any coin.

The Lethe
Separates the Asphodel meadows from a generic area which leads to Erebus. Swimming in the Lethe will drain the players xp. The Lethe starts at the cave of Hypnos, which is filled with narcotic flowers.

The Cocytus
Seperates the Asphodel Meadows from Tartarus

The Phlegethon
A river of lava located entirely in Tartarus. Although the main river flows into the Stygian marsh like all the other rivers, the Phlegethon also branches off and leads deep into the bowels of the earth, to the underground parts of Tartarus.

The Styx
A swampy river. By far the longest of all the river, as it encircles the map seven times. Swimming in the Styx will grant resistance and strength status effects for a relatively long time.