Star City is a spin-off of For All Mankind with a focus on the Soviet Union. Rhys Ifans is in a lead role as the Soviet's Chief Aerospace Designer with Anna Maxwell Martin as the head of the KGB surveillance team. Solly McLeod, Agnes O'Casey, Alice Englert, Adam Nagaitis, Josef Davies and Ruby Ashbourne Serkis joined the cast. Filming took place in Vilnius, Lithuania from February 2025.