Star Trek Online: Agents of Yesterday

Agents of Yesterday is Star Trek Online's third expansion, announced on May 5, 2016, as the game's contribution to the 50th anniversary of Star Trek. The expansion allows for the creation of Starfleet player characters from the era of the original series who become involved in an ongoing "Temporal Cold War" (a storyline that was introduced in Enterprise, and brought into STO with the "Future Proof