Being a Call of Duty enthusiast, you are familiar with the routine, as each time there is a new Black Ops teaser, every frame is an examination of a high-class intelligence document. The Black Ops 7 teaser, at a little over a minute long, is not an exception- but even the most attentive audience would have overlooked several minor details that were giving hints of what will come next, such as hints of Lobby configurations and interactions between players. Want to master Cod 7? Follow U4gm for the latest strategies and expert advice.

Stop the teaser at 0:47 and you will see a battered transistor radio prochained on a rusted shelf. You can dismiss it as set dressing, but there is a latent frequency there, which you can just detect: 107.3. The hardcore fans will know that number-107.3 was the in-game radio station of Nuketown in Black Ops 2, which is one of the franchise elements.

Then, consider the crates that are piled around the radio. One of them has a tattered insignia: a half-burnt Phoenix with its wings. It is not a new design, the players of Black Ops 3 will recall that the Phoenix was one of the main symbols related to the Shadow Man, a villain that haunted the game in the Zombies mode. It is a minor point but it hints at the possibility that BO7 Zombies will be picking the threads of that plot, not beginning afresh.

Then there is the background billboard which is partly covered by dust and fog. The burning Black Ops logo in the center will primarily captivate the majority of viewers, but the text beneath it is worth straining your eyes: Vorkuta - Est. 1951. Vorkuta is no ordinary location, it is the Russian prison camp where the original Black Ops was based where Alex Mason was kept captive. Raising that setting would mean that the campaign of BO7 would sink deeper into the cold war origins of the series, possibly even returning to the legacy of Mason.

It is a smooth, new rifle, with a little scratch on the handle, though, when you magnify, you can see there is a little: 4-7. It is a little tip, to be sure, but it is a type of Easter egg which the team at Treyarch loves to leave, a means of giving back to the fans who take the time to slow down and look. These little trinkets may not appear much, but, if combined, they are creating an image of a game that doesn't forget its history and, perhaps, alludes to newer ones, and even affect the CoD BO7 Bot Lobby configurations of players who may wish to experiment with their own matches.