This mod adds a lot of new content, including more enemies, more weapons, armor, and other items. In addition, the mod has new enemies and boss enemies.

The gameplay of the mod is similar to the original Nightmare.

How to install and use the Nightmare Plus add-on:

Download and install the addon from your account. Open the folder where you downloaded the file. You will see a file named "Install" in the folder. Open the file, and you are done.

The mod is completely modular, so you can install the changes you like without any other changes affecting your playthrough.