Allegiance was a Microsoft game, released in 2000, which failed to make a dent in the market. With time however, a dedicated following for the game emerged which surprised everyone with its community spirit.
In order to thank those people, Microsoft decided to release the source code for the game.
This is what the developers had to say We're astounded at the progress that has been made at creating new factions, hosting new servers, replacing authentication, etc. It seems that Allegiance hasn't really died.
With that in mind, we're releasing the Allegiance source code to the community.
It took some work to come to this decision. The chief concern was that the development team (who are all off doing new projects) would have to take too much time to reconstruct the build environment to work with the latest tools, pretty up the code, scrub the comments, etc. Since it was impossible to free up the time for the development team to do this work, we were left with the choice to release it as is (unsupported) or skip it altogether. Given where the Allegiance community has gone with NO SOURCES WHATSOEVER we decided that it would serve the community better to release the sources unsupported.