Spear of Destiny was released on the iPhone as a free update to Wolfenstein 3D on October 28, 2009.
On March 31, 1999, Spear of Destiny was put on the infamous German index by the BPjS. For more information about what this means and to see a list of games sharing the same fate, take a look here: BPjS/BPjM indexed games.
Spear of Destiny is violating §86a of Germany's penal code (for using characteristics of unconstitutional organizations), therefore it is illegal to produce, distribute, import, export and use it in the public. This does not mean it is illegal to just own the game.
You can enter "joshua" to bypass the doc check. This produces the message "Greetings Professor Falken, would you like to play Spear of Destiny?", a reference to the movie "War Games". This and the other two words to bypass the doc check, "snoops" and "pelt" are stored in plain text which can easily be seen in the game's executable.
The spear of destiny is actually based on the lance, that according to the Gospel of John, has been used at the Crucifixion to wound the side of Christ. With the passing of time, the lance was the subject of many legends, both old and modern. The game's storyline has more things in common with the modern ones, especially the one detailed in Trevor Ravenscroft's 1973 book, The Spear of Destiny. According to it, possession of the Spear would bring its owner the power to conquer the world, but losing it would bring immediate death. The relic had been owned by a succession of powerful European rulers down through the centuries and eventually came to be in the possession of the Habsburg Dynasty. Hitler stole it from Habsburg's treasury at the Hofmuseum in Vienna, when he conquered Austria in 1938. It fell into the hands of the Americans in 1945 and it is said that later that day, in fulfilment of the legend, Hitler committed suicide.
When you answer incorrectly too many times at the copy protection screen, one of the things the game does is call you a pirate. But if you crack open the game in a hex editor and look through it you can find a part where it says snoops and pelt are the right answer. And these will let you in everytime.
A CD version of Spear of Destiny was also released, but it was reportedly no different from the disk version i.e. it had no extra animations or audio tracks.
For Spear of Destiny "Extra mission" disks were released later by Id software. They had new graphics, colors and enemy characters (sprites).
A second title screen is shown when you finish the game. You can see it here, in screenshots section!