Doom for Pocket PC

Doom for Pocket PC (later retitled Doom PDA) was initially released in by developer MachineWorks Northwest, LLC, and published by Simon & Schuster Interactive, Inc, for -based  devices.

Although the IWAD for The Ultimate Doom is included, only the original three episodes are playable. All cheats from the DOS version work, but the level select cheat does not work for the fourth episode Thy Flesh Consumed. This port does not play any music, though the music volume setting is still shown in the options. There is no support for multiplayer games or for loading WAD files.

Digital re-release
This port was later re-released as a digital download for devices as "Doom PDA," targeting. At that time, developer MachineWorks Northwest unsuccessfully pressured the authors of several free and open source ports for Windows Mobile devices in an attempt to make them cease distribution. This action raised the ire of many Pocket PC gaming enthusiasts.

Bugs
Due to a broken scheme, the game must be installed to the default path, even though the setup asks if the user wants to install it elsewhere. If it is not installed to the default path, a misleading error message pops up, stating "Serial Numbers Don't Match!" As this prevents installation of the game onto SD cards, this creates major issues on 32 MB or smaller devices, as the game is a total of 26 MB in size - all effectively available space on the device will be used up by the game.

Another issue with this scheme is that, after a device restore via or, the device must be reset immediately; otherwise, the game will not start, and the same misleading error message pops up instead.

IWAD
The IWAD provided for use by Doom for PocketPC is called and is actually a PWAD created using WinTex. Some of the graphic lumps have been modified to have vertical black bars with the image squashed horizontally in order to preserve proper aspect ratio. It is bytes in size with  entries, one entry less than the Ultimate Doom WAD. It is missing the lump. It has the following hashes: