If you are looking to modify the contents of the zip further, use these community-recommended tools:
: Defines new abilities and magic effects. Users often edit this to fix bugs, such as adjusting to prevent game-breaking armor buffs. File: Dungeon.of.Dredmor.zip ...
: Use GIMP or Paint.NET for creating or editing game sprites. If you are looking to modify the contents
: Typically stored as .png files, these provide the visual assets for the new items or monsters. How to Install the Feature File: Dungeon.of.Dredmor.zip ...