Klooni is a major mod for registered Wolfenstein, made by KFH Games. It was released on December 8, 2007.
The outline of the mod is basically to recast DOOM in the Wolfenstein 3D engine. All graphics, sounds and music have been replaced as well as the palette. All graphics are now in high resolution.
All traits from DOOM are more or less intact, including doors opening vertically. Along with some other features, these were put together in collaboration with Ripper.
60 new levels are featured. After its initial release in late 2007, numerous patches and fixes were released, and the final version saw the light of day on March 17, 2012.
It should be mentioned that in order to play Klooni, one must own the WAD file of either DOOM 2 or Final DOOM.
Six months after the original 2007 release, Megabyte put out a 10-level map set entitled Demonoid.
Yet another map set for the mod was later put together by Serpens, entitled Earth Anomaly.