In honor of its 10th anniversary, Nival Interactive and Heroes of Might and Magic V team have presented a special HMM5 scenario "Heroes: Directors Cut"

"This anniversary scenario will take you into the journey to castle Nivalia, which suspiciously looks like Nival's office. You'll have to play as a project leader, responsible for accomplishment of the errand of state importance. Using the given budget you'll have to fulfill the task in time."

Download it here (54 mb). The Hammers of Fate addon is required, and so far there is only a Russian version.