WAD files are the original format that Doom used to store data files (such as sound, graphic patches, textures, palettes and level information).

There are two types of WAD files:

• IWAD is a complete set of game data (such as DOOM2.WAD).
• PWAD (patch WAD) contains a subset of resources, e.g., a single level. These are meant to be loaded in addition to an IWAD.

From the original game retail disks, CDs and electronic download retail products (from Steam, GOG.com, or id Software online store).

Shareware versions of these games can be acquired from http://www.idsoftware.com/.

• See the Getting started page.

• Doom Builder
• SLADE3

• PWAD
• Data lump
• WAD directory