Over the years there have been many attempts to bring the worlds of other Elder Scrolls games into Skyrim, like the well-known Skyblivion and Skywind projects. Earlier games in the series barely get any attention anymore, mostly due to their age, but one mod seeks to reinvigorate the fanbase for Daggerfall by bringing it faithfully into the Skyrim engine.
The aptly-named addon Skygerfall does exactly this, preserving the old-school dungeon-crawling feel of Daggerfall in Skyrim's 3D environment. Daggerfall is infamously a massive game, comparable to real-life countries, but Skygerfall only adds the main questline. It's fun for older fans of the series, but it's also worth checking out if Daggerfall's old-school mechanics aren't for you.
Incompatible Mods And Prerequisites
Skygerfall is an overhaul that doesn't clash with a lot of other addons, though there are some that it flat-out doesn't work with. Any mod that modifies the "Unbound" quest (MQ101) won't work alongside Skygerfall, and body and armor replacement mods generally don't work either. The mod creator also recommends that players avoid using Followers in Skygerfall areas as the world meshes aren't properly developed for their AI.
There are a few pre-requisite addons players must have installed (and placed higher in their load order) before installing Skygerfall. The Unofficial Skyrim Patch fixes a lot of things in the game that apply to Skygerfall. SKSE64 is a script extender that allows Slowfall and Jumping spells to function correctly, though if you don't plan to use these spells SKSE64 is not required. Skygerfall also offers special compatibility patches on its main download page for the Alternate Start and Realm of Lorkhan mods that change the beginning of the game.
How To Install Skygerfall
Skygerfall works on both normal Skyrim and Skyrim Special Edition, so be sure to download the correct files for your game version. Installation of addons can be done manually, but it's best to use some kind of Mod Manager to organize addons and alter load orders when needed. The Nexus Vortex and Wrye Bash are both popular options.
For the Nexus Vortex, download the Skygerfall file from the Nexus through Vortex, locate your Skyrim directory in the app, and ensure you install it in the mod manager - there should be a little indication when it's ready to go. For Wrye Bash, download the file independently, locate the ZIP with the app, and make sure to activate the .esm/.esp files. For both methods, ensure that the Skygerfall files load after the Unofficial Skyrim Patch and other prerequisite mods.
The Elder Scrolls V: Skyrim Special Edition is available on PC, PlayStation 4 and 5, and Xbox One and Series X|S