Way back in January of 2001, Defence Alliance was released for Unreal Tournament!
It was about a year under development, that means Defence Alliance concept was born around 10 years ago!!
In total we released four version of Defence Alliance for Unreal Tournament, before we began experimenting on UT2003. But the community kept it alive and released a community edition of Defence Alliance.
After Unreal Tournament, we moved on to Unreal Tournament 2003 when it was just released. After that came Unreal Tournament 2004, which was much better then it's previous version. After some struggles with the motivations in the team, but extremly good reviews for our first release, we released two updates for Unreal Tournament 2004.
We then came in contact with Ramm-Jaeger, who at that time just won the 'Make something Unreal' contest and released Red Orchestra as a retail title. He offered to help us port the mod to Red Orchestra, and so we did. We released beta 1.6 for both Unreal Tournament 2004 and Red Orchestra.
Unfortunatly, because lack of staff for the Red Orchestra version, ended it's life pretty fast. Because it had a crash in it, which crashed the servers at the map rotation. Nobody was able to fix it at that time.
After about a year on hold, Ramm-Jaeger contacted us again, and suggested to port it to Killing Floor, since that player base would fit the Defence Alliance theme alot more, then the player base from Red Orchestra.
Yet again Ramm-Jaeger helped us in his spare time to port this to Killing Floor and fixed serveral bugs.
Then joined Blackcheetah, who created the completly new survival mode for Defence Alliance 2. Which all lead to the recent release for Killing Floor through steamworks, which was released by Tripwire Interactive.
After an old-skool member from Defence Alliance for Unreal Tournament, CralexNS, also wanted to help out, he redesigned the survival mode, which will feature in the upcoming update, which will release soon!
A long history, with serveral releases on multiple games! Including Unreal Tournament 99,Unreal Tournament 2004,Red Orchestra and most recent Killing Floor.