The dragons, dire wolves, White Walkers and power-hungry political factions in HBO’s fantasy epic “Game of Thrones” will invade movie theaters later this month — on the big, big screen. An exclusive trailer for the coming season along with the final two episodes of the previous season will be shown in 150 Imax theaters across the country.

The critically acclaimed drama about rival dynasties in a medieval-like world will be the first television series ever to appear on Imax screens. Tickets for the engagement, which will run for one week from Jan. 23 to 29, will go on sale “in the coming days.”

The move signals a continued blurring of the lines among media platforms, where digital videos, television series and films stream across a proliferation of screens, from tiny mobile phones to movie theaters. It also shows the extent to which media companies are trying to turn their blockbuster hits into mega events, as drawing mass audiences becomes increasingly rare.

For Imax, the “Game of Thrones” screening is part of an effort to expand the type of programming it shows beyond its core theatrical releases, especially as the North American box office faces tumbling sales. The company has had preliminary conversations with other entertainment companies about showing other television series and also has tested technologies allowing for the screening of live sports. Music concerts also are on the table, said Richard L. Gelfond, chief executive of Imax.