Cytadela is a conversion of an Amiga Doom clone
that was also called "Cytadela". The original was
created in the mid-1990's by Virtual Design, and
released first in Poland and then in other
countries.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This is the last release of the 0.6 version. It has minor improvements, and finishes development of all features that have been under development so far: there is in-game sound, and the game saves its configuration to a file.
As the project is still under development, there
is not much that can be done in the game.
Currently, you can only walk through the training
levels, collect items, and use them. This version
is available only in Polish, but the documentation
contains a description of the in-game menu and the
gameplay in English.