What is "dallos"

is a science fiction Original video animation (OVA) released in 1983. It was created by Hisayuki Toriumi, as well as co-written and co-directed with Mamoru Oshii, although Toriumi’s involvement with direction is uncredited. It is widely considered not just the first OVA ever released but the first animated direct-to-video production ever released.

The storyline focuses on a rebellion on a Moon colony by settlers and a mysterious artifact called Dallos. The story and setting take influence by past works such as the 1966 feature film The Battle of Algiers and the 1966 novel The Moon Is a Harsh Mistress.