While it's pretty obvious that most big Hollywood blockbusters (e.g. The Avengers) are going to generate lots of money at the box office, the commercial success of Iron Sky wasn't all that foreseeable. Especially since it had to overcome the risk that its subject matter, which has quite the satirical character, might not sit too well with audiences in every part of the world. Fortunately, that wasn't the case. And indeed, Iron Sky is a fun ride that parodies, exaggerates and doesn't hide that premise for a second. Even the trash copy studio The Asylum paid tribute to the film by creating its own variant called Nazis at the Center of the Earth (re-named to Nazi Sky for the German market by clever marketeers). Of course, the original film's quality is much better and justifies the success it had with moviegoers. The demand was there, so why not profit off of that a little more and please the fans?

The Finnish director Timo Vuorensola was under a lot of time pressure and completed the theatrical version only 48 hours ahead of the deadline for the Berlinale festival. Unfortunately, that meant that numerous scenes were not yet finished and couldn't be integrated into the movie. The now released Director's Cut, which is also marketed as Dictator's Cut, is not only much longer than the theatrical version but also the better film. It makes the film seem more complete, adds more depth to story and characters, has more battle scenes and some improved effect shots. That should satisfy fans. The director himself described it this way: "With the Director's Cut, I was able to bring in many of the scenes I really enjoyed and now are prepared in full quality. The film is now almost 20 minutes longer, and much more epic in pacing, and finally in the form I originally wanted it to be.". There isn't really much to add to that. Fortunately, the DC was already released in the UK, so if you want to get your hands on it, you can do so.

Comparison between the Theatrical Cut and the Director's Cut (both released on DVD and Blu-ray by the German distributor Splendid Film).

28 differences, consisting of
18 extended scenes
4 additional scenes
3 effect changes
2 repositioned and extended scenes
1 extended scene with alternate material

The Director's Cut runs 1040,64 sec. or approx. 17 minutes 21 seconds longer than the Theatrical Cut.

Extended Scene with alternate material
0:02:24: The scene in which Washington and his austronaut colleague Sanders enter exit their ship is much longer in the DC. Washington rehearses Neil Armstrong's famous sentence once more but slips was he steps down the ladder. He falls to the ground and curses as Sanders helps him back up, saying that Washington's rant is another quote for the ages. He then tells his colleague that he should set up the US flag between some rocks while Sanders himself investigates the surface with sensors. Nazi astronauts observe them from a distance and see how Washington manages to rip the flag into pieces in his attempt to position it between the rocks.

The Theatrical Cut (which will be shortened to "TC" from now on), shows how Sanders looks at his sensor instrument.
91.28 sec.

TC:

DC:

Extended Scene
0:04:24: The camera shot revolving around Sanders looking at the Nazi base is slower in the DC and a little extended, as well.
6.68 sec.

Extended Scene
0:06:26: Renate walks towards her classroom. As she enters, the kids stand up and show the Nazi greeting gesture in a disciplined and national-socialistic fashion. As she replies with the same greeting, the TC shows that, as well.
34.84 sec.

Extended Scene
0:07:46: Renate wants the class to elaborate on the origin of the moon Nazis.

Renate: "Yes, more specifically. Gertrude."
Gertrude: "Germany!"
7.12 sec.

Additional Scene
0:08:04: Washington is brought to the landing strip of the space ship. Back in the classroom, Renate asks the kids about some countries. According to them, North America is capitalist, Russia has Bolsheviks and the rest of the world is classified as subhumans. Then, Renate asks the pupils what they as the superior human race with all their wisdom and kindness would tell those poor, uneducated and unloved rebels when they exit their space ships. The class answers unanimously: "We come in peace!".
62.6 sec.

Extended Scene
0:10:54: Adler asks Washington in a disgusted tone what he is. Washington is irritated and feels like he's the vitctim of a joke. They should know that he's a famous model, doesn't Adler watch TV? And who is Adler anyway, Washington asks and mocks Adler's dress that looks like it got him kicked out of Mardi Gras. Or does he imitate Prince Harry? Kortzfleisch, obviously not able to speak English, asks Adler to translate what Washington said. While Washington asks for a drink, Adler just turns his back on him, clearly not being in the best mood.
38.6 sec.

Extended Scene
0:12:48: Washington thinks of another German word. Kindergarten. He loves that because he was really good there back in the day.
8.6 sec.

Extended Scene
0:14:04: Before Renate and Adler walk down the corridor, the DC shows two young girls playing hopscotch with a swastika.
8.2 sec.

Extended Scene
0:16:27: The tracking shot through Dr. Richter's lab begins earlier in the DC and shows a stuffed monkey.
9.12 sec.

Extended Scene
0:18:07: After Adler left the lab, Dr. Richter scoffs sarcastically and prepares a syringe (probably with the "Albiniser" that Washington is about to receive). Washington talks a little trash and nervously observes Richter. He freaks out as he sees how big the syringe actually is.
70.92 sec.

Repositioned and Extended Scene
0:20:30: On the one hand, the scene with the US president working out can be seen earlier in the TC (around minute 8. which makes this a repositioning) and was extended in the DC. She gets back on her home trainer and curses at someone: "Here I come, you bitches! You bitchy bitches!"
16 sec.

Extended Scene
0:22:36: In the DC, Renate gets away from Adler after they stood at the window for a while. He uses some metaphors with Nazi terms in order to win her over. He wants to exercise the goose step with her, nest in her eyrie and then even starts to sing some sort of march in a shrill manner. He soon stops because it can hardly get any more awkward. Renate avoids him again and he gives her the "Handbuch des nationalsozialistischen Geschlechtsverkehrs" (The Handbook of the National Socialist Intercourse). He marked page 65 and urges her to study that. He then exits the room, Renate looks at the page and throws the book away in disgust.
62.6 sec.

Extended Scene
0:26:56: As Renate says Washington's full name, the DC cuts to a more distanced shot while the TC just includes the audio of that. A minimal extension in the DC, so to speak, but not relevant.
1.2 sec.

Extended Scene
0:27:00: Renate tells Washington that she's an "earthologist" but has to confess that she's never been to Earth yet. At least they have space ship that would make it possible. However, it's dangerous and no one has returned from a trip. As she asks him how he spends his life there, Washington replies that he's a model. She doesn't understand that and he adds that he smiles, shows his six-pack and people take pictures of him. Renate still doesn't get the concept of that and Washington says that he's hot. She comes near him and he believes that she wants to kiss him and gets ready for it, only to be disappointed that she places her hand on his forehead in order to check his temperature. She says that she can't really tell his temperature from that and he makes a face.
77.88 sec.

Additional Scene
0:35:34: In the DC, Adler, Renate, Washington and a Nazi soldier suddenly stand at a busy highway. Adler order his soldier to stop a car. The soldier steps forward but is hit by a car as can be heard off-screen. Adler now has blood in his face, wipes it off partially and says in a dry manner: "Change of plans. We walk.". Washington can't believe Adler's take on the situation and they walk down next to the highway. The bloody remains of the soldier can be seen on the street.

The TC has a fast motion shot of the New York skyline instead.
51.2 sec.

TC:

DC:

Extended Scene
0:37:48: Washington is furious that the group of colored basketball players called him "white". Adler grins sarcastically.
10.16 sec.

Extended Scene
0:38:54: Washington suddenly thinks of something and panicky looks into his pants. Did the albinization shrink his member, too? According to his shocked reaction, it did.
12.12 sec.

Repositioned and Extended Scene
0:39:06: Again, a repositioning was made here. The security conference and Vivian's outburst against her team surface at roughly 15 minutes in the TC while the DC has them at minute 39. Also, the scene was extended in the DC as Vivian continues to elaborate her threat to her team. She says that she'll briefly leave her office to buy a knife and if her team doesn't have useful ideas for her that exceed the pleasures of a G-spot orgasm by then, she will stab them all to death. And she clarifies that that is no joke.
35.6 sec.

Effect change
0:46:04: As Adler and Renate enter the Oval Office, the corridor behind them is normal in the TC but has flashy lighting in the DC, making their entrance look more spectacular.
No time difference

Theatrical Cut	Director's Cut

Additional Scene
0:48:27: A new, almost 4 minute-long sequence follows in the DC. It is set on the moon and shows the current leader Kortzfleisch at a strategy table planning the invasion of the Earth. His generals then come to him and tell him that it's time. They then go to the hangar and watch the soldiers enter the space ships which then start leaving the base.
235 sec.

Extended Scene
0:53:58: After Washington demanded the police officer to ask Renate to confirm that he comes from the moon, the officer does so in the DC.
9.64 sec.

Extended Scene
0:56:39: Renate and Washington run away from the Nazis and stop in an alley. Washington asks her if kicking people in the crotch is what she teaches at school but she is sad and says that she's not really an earthologist. In fact, she doesn't know anything about Earth and has to speak to Klaus (Adler). Washington is not really fond of the idea. A homeless man then utters something in Finnish and Washington replies ironically that he thought of that, too, before running after Renate.
52.48 sec.

Extended Scene
1:10:09: The DC has an effect change first as it adds two fighting jets flying through the street in low altitude. They are not there in the TC. After that, the scene is extended in the DC and shows how numerous Nazi space ships are hit and destroyed by the jets and even naval ships.
24.48 sec.

TC:

DC:

Effect change
1:10:46: Both versions show the ship that was used by Adler, Renate and Washington in order to land on Earth. In the background, the TC shows the full moon while the DC adds smoke and fiery light from the battles that take place.
No time difference

Theatrical Cut	Director's Cut

Effect change
1:11:21: As the first Nazi meteor hits the Earth's surface, the DC's effects look a little more spectacular.
No time difference

Theatrical Cut	Director's Cut

Extended Scene
1:14:13: The US president shows the USS George W. Bush to the other members of the council. While the other countries were busy fighting the climate change and other unimportant things, the US built this highly engineered space ship that is supposed to be used for the Mars exploration. A member of the council asks why they armed it and the US president replies that it is their right to bear arms. The Mars has to be conquered, after all.
26.44 sec.

Extended Scene
1:20:36: The Earth's armada destroys some Nazi ships that just left the base. Vivian is happy about that.
32.96 sec.

Additional Scene
1:45:01: After the credits, the DC features another scene. Obviously, Washington takes revenge on Dr. Richter's method of torturing him with Nazi songs and speeches over the speakers. Now, we see Dr. Richter screaming as he has to listen to loud modern hiphop music. After that, the display "Das Ende" (the end) can be seen, followed by DC-only credits.
54.92 sec.