Activision launched a mysterious teaser site for "Call of Duty: WW2" to add further excitement to the upcoming first-person shooter game.

The new website shows an Enigma machine, which was used by the German military to encode discrete communications during the World War 2 era. According to reports, the Allies exerted all efforts to break the cipher to allow them to decrypt the hidden radio messages. This allowed them to win the war.

However, fans of the game franchise are having a hard time deciphering the Enigma machine to understand what the game developer wants to convey in the teaser site. Some tried their best to crack the code and posted their speculations on the game's subreddit page.

One of the fans discovered the coded phrase "IUFDJ BHLOP JMUBA" that was reportedly discovered in the Zombies helmet featured in the teaser image of the upcoming game's Nazi Zombies mode.

According to reports, the phrase will translate to "a new horror rises" when entered into the Enigma machine. This could be a clear reference to the Nazi Zombies mode of the upcoming game.

Another information posted on the subreddit reveals that the number "Nr. 51.0344n2.3768e," which can be seen at the bottom of the Enigma machine, could possibly pertain to a city located in Northern France called Dunkirk if the numbers will be used as GPS coordinates. Dunkirk can be remembered as one of the famous locations during the second world war.

While the game creators remain mum about the latest speculations regarding the "Call of Duty: WW2" game, Sledgehammer's co-founder Michael Condrey confirms in an interview with Games Radar that the upcoming game will feature several locations where the historic war took place.

"We get to take those from real, iconic locations from around the globe, real battles from D-Day to Aachen [Germany], right?" the game developer executive stated. He also mentioned that the game will feature a narrative that will span from the events that happened in Normandy until the final liberation of Western Europe.

Activision will release "Call of Duty: WW2" on Nov. 3.