Nexus Mods is a useful resource that provides all sorts of mods for popular PC games. Here's how to download and use them.

Browse Nexus Mods for the mod you wish to add into Aliens: Dark Descent. Be sure to create an account first, and then on the mod's page, select the Download: Manual button to obtain the mod file.

A Nexus Mods account (you can register one for free here). Nexus Mods Vortex Mod Manager (I’ll also show you how to install mods manually, but this makes things a lot easier).

How to install and play Fallout 4 Mods on PC. Step by step method that explains how you can effectively do that without breaking your game.