In what appears to have been an accidental leak, popular digital distribution store Green Man Gaming has posted up details on the first expansion pack to hit Maxis' simulation title SimCity (via Joystiq).

Titled Amusement Park, the new expansion will offer mayors of SimCity the chance to lay down customisable parks which will include attractions and entrances. Those who do place down parks will also gain an increase in cash through shoppers, tourists and boosting the local commercial economy.

No price on the expansion was sadly revealed, however a smart YouTuber by the name of HypnotoadProductions was able to capture the page before it was taken down which you can check out below. Since accidentally going live, SimCity's official Facebook page has responded stating that "some of you may have seen thrilling new SimCity content that arrived too early at the gate. It’s coming May 28th. We think you’ll be amused."