A free program for Windows, by Clear_strelok.

This is an unofficial application for Doom 3, developed by its fans. The application will not modify the original game, but will create a separate world, with its own monsters, traps, and other elements. This mod adds new weapons, traps, monsters, and other elements, such as new gameplay options.

The application can be used to play in the original world, or to create a new world. The game can be played in survival mode, or in creative mode, where you can build your own world and create monsters, traps, and other elements.

In survival mode, you can craft weapons and traps to fend off dangerous mobs. In creative mode, you can build your own world and create monsters, traps, and other elements. You can also play with other players in multiplayer mode.