Resident Evil: Operation Raccoon City, is a 2012 third-person shooter video game with online playability for Microsoft Windows, Xbox 360, and PlayStation 3. It was developed by Slant Six Games and published by Capcom. It is set at the same time as Resident Evil 2 and Resident Evil 3: Nemesis, but is unrelated to the main series storyline and is a "what-if" entry in the series outside of Mainstream canon.
The story focuses on two separate special forces teams - Delta Team and Echo Six - as they take part in missions for their respective commands. Delta Team, a USS unit, is assigned by USS Command with the destruction of digital data incriminating Umbrella to the biological outbreak, as well as destroying facilities and killing witnesses to prevent the US government obtaining further data. Such missions include the disabling of the city's power grid to prevent anyone using telephones.
Echo Six, who operate on behalf of the US government, instead have orders to obtain sensitive Umbrella data to take them down, helping out isolated survivors along the way like Jill Valentine and Sherry Birkin.
As shown by the way the ending boss ("Parasite Super Tyrant") is created, the two campaigns are not connected, canonically, and instead ask "what if this organization had a firm grip during the outbreak".