The map, which was available as a pre-order bonus and to users who purchased the Hardened Edition, appeared in online matchmaking playlists as part of a Nuketown 2025 24/7 promotion.
The 24/7 promotion was to make the bonus map available in playlists during the game's introductory Double XP weekend, which ended November 18.
Many players felt they had been cheated, saying that they pre-ordered the game specifically for early access to the map and now cannot access it.
However, earlier today Treyarch reintroduced the map as part of a 'Chaos Moshpit' playlist, featuring Nuketown 2025 as well as Carrier, Cargo, Express, Hijacked, Slums and Standoff.
Speaking to users on Twitter, game design director David Vonderhaar explained the initial decision to remove the playlist, saying it "would fragment matchmaking really poorly at this stage".
He added: "It will be back as a single map playlist for Double XP weekends or other events. It's how we've always done it."
Copyright: ActivisionInitially many PS3 users had difficulty even redeeming the Nuketown 2025 map due to a combination of server troubles and faulty codes.
Despite launch problems, which included some PC users receiving the wrong game disc, the game is the biggest-selling title this year.
Black Ops 2 is available on Xbox 360, PS3 and PC worldwide now, and on Wii U in North America. The Wii U version will launch in Europe on November 30 along with the console.
> Read our review of 'Black Ops 2'
> 'Black Ops 2':Everything you need to know about the latest 'Call of Duty'
Watch a trailer for Black Ops 2 below: