MOSCOW — “Iron Sky,” the $10 million Nazis-on-the-moon spoof partly financed by global sci-fi fans, clocked in more than a quarter of a million admissions, and box office north of $3 million, in its initial release over the Easter holiday weekend.No. 1 in its home territory of Finland with 75,000 admissions, the film — a co-production with Germany and Australia, pulled in 250,000 admissions from 340 screens across Norway and Germany. Released by Polyband in Germany, the movie — a dark comedy of mad Third Reich escapees to the moon planning to return to Earth for a 21st century takeover — “Iron Sky” rolls out next across other European and international territories, including the U.S., U.K., Sweden, Denmark, Poland, Australia, Israel and Japan. Helsinki-based producer Blind Spot Pictures worked a worldwide community of sci-fi fans and online gamers to help pull in close to 10% of the movie’s budget through crowd-financing. Polyband CEO Swetlana Winkel said the 164-screen release in Germany did gangbusters biz. “We are very glad that so many fans of ‘Iron Sky’ went to see the film although it was Easter holidays and very cold,” she said. “We will increase the screens to follow the huge demand.” Producer Tero Kaukomaa said the opening suggested there was a potential audience of “millions around the world.” Stealth Media Group has sold the film worldwide except for Portugal, Italy, Spain, Latin America and South Africa, he added.