After years of silence, the XCOM FPS has resurfaced as a tactical cover-based third-person shooter known as The Bureau: XCOM Declassified. Yet, in spite of a new perspective and a new title, 2K Games insists that their re-revealed game is not a reboot. Instead, it's simply an "evolution" of the long-in-development game.

"The game has not restarted over and over again," 2K Marin VP Alyssa Finley told Shacknews in an interview. "If you look back at the game we showed in 2010, you'll see some of the same enemies, you can see some of the same teammates. This really is an evolution."

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After a week of teases, 2K Games has officially announced The Bureau: XCOM Declassified--the game formerly known as just XCOM.

When introduced in 2010, XCOM was a first-person shooter set in the 1960s. The Bureau takes the same setting, but is now a tactical third-person cover-based shooter. "Set in 1962 at the height of the Cold War, The Bureau tells the origin story of the clandestine XCOM organization's first encounter with a mysterious and devastating enemy," 2K's press release details.

Watch: the re-reveal trailer »