How to play Doom on modern Windows systems

Playing Doom under Windows XP can be troublesome. The original version of Doom ran under MS-DOS. Because Windows XP has only limited support for DOS, Doom may run poorly or have other issues (sound support is especially affected).

Recent commercial versions of Doom (such as Doom Collectors Edition) include Doom 95, Id's native Windows port of Doom. However, because of compatibility issues in Windows XP and bugs in the port itself, even this does not play correctly.

Source ports
By far the most effective solution is to use a source port. Many source ports exist which are derived from the Doom source code. These are further developed and much better supported than the official Id port.

To use this solution, first install the game as normal. Then download a source port (usually in a .zip file), and extract the zip file into the location where the game was installed. Running the source port executable (eg. prboom.exe or zdoom.exe) should then start the game.

Other solutions

 * Use DOSBox to run the original DOS Doom executable. Poor performance can be improved by increasing the "cycles" parameter in the DOSBox configuration file.
 * SoundFX 2000 allows sound support for DOS games under Windows XP.