Wireds Jason Silverman ranked Interkosmos alongside Automatons, Puzzlehead, and The Wild Blue Yonder as "Best Shoestring Sci-Fi of 2006" stating that "At times, Interkosmos''' hip, deadpan style threatens to grow tiresome, but then Finn injects something unexpected to liven it up. By the end, Interkosmos'' has coalesced into a colorful portrait of an imagined time where movies and space travel were happy, bubbly things."
The Village Voices Dennis Lim called Interkosmos a "a retro gust of Communist utopianism" stating that it "weaves together lovingly faked archival footage, charmingly undermotivated musical numbers, propagandistic maxims ("Capitalism is like a kindergarten of boneless children"), stop-motion animation (of a suitably crude GDR-era level), a Teutonic (and vaguely Herzogian) voiceover, and a superb garage-y Kraut-rock score (by Jim Becker and Colleen Burke). Finn's deadpan is immaculately bone-dry, and his antiquarian fastidiousness is worthy of Guy Maddin."