The Iron Sky: Invasion Website now offers new playable demos for the Windows and OS X editions of Iron Sky: Invasion, the space simulator that pits players against the menace of moon Nazis. The downloads are hosted on this page, and word is that it includes the tutorial along with the first 30 minutes of gameplay. There is also a new patch for the full version of the game on that page for the OS X edition, while owners of the Windows version can get the update automatically from within the game. The new version is said to address "some small issues."