Totem Mod
China based "The Septenary Gods" or TSG for short, are a team of excellent mod developers. They have made an app called ModManager where you can install their mods through a click of the button. You can download the mod manager here, or from Orange Hat Tech (he posts all kinds of mods there and guides for modifying game files for new features etc.) You can also add Totem Mod manually with the TotemMod file below.
The Totem Mod package features a massive and beautiful new map called "Archipelago", with teleporting stones, wendigos and all kinds of trouble. It supports up to a mind numbing 12 players! The mod also features 4 new characters, 4 new spells and some exciting crafting recipes you won't find in vanilla DH.
Disclaimer:
Use the Chinese server bot by Moeyy if you want servers with the latest version of Totem Mod and all the bells and whistles, just be aware you can´t adjust any parameters with that bot, like number of thralls, days, coal efficiency etc. You can only select which mods you want to use.
If you use the Conductor bot or the Overlay (same servers) to host servers, you might as well use Totem Mod V.1.1.0 since these servers stopped getting Totem Mod updates after that version. You will get all the new spells, the new map and the 3 new characters, recipes etc., but you can´t play the recently added female witch character or craft the molotov cocktail recipe. In return you will be able to customize everything to your liking and get exclusive 10-20 slot inventory.