Description Halo Derelict is an awesome large arena-type map for UT99. It's the map Torlan did for UT 2K4 but brushes have been combined, some improved on to improve symetry and alleviate rendering glitches. Pickups are placed differently and logically. Secret rHalo Derelict is an awesome large arena-type map for UT99. It's the map Torlan did for UT 2K4 but brushes have been combined, some improved on to improve symetry and alleviate rendering glitches.