This is a DVDrip of the remastered edition released in Japan, with added English subtitles.
Dallos (???, Darosu) is a Japanese science fiction OVA released in 1983, directed by Mamoru Oshii and created by Hisayuki Toriumi. It is widely considered the first OVA ever released.The storyline focuses on Moon pioneers and the evolution of mankind.
In 1991, Celebrity Home Entertainment released an American dub of the series on VHS under the title Battle for Moon Station Dallos. The three episodes were edited together as a film. This feature version was later reissued by Best Film and Video Corp simply titled "Dallos".