Darien Lake had the Nightmare at Phantom Cave indoor coaster for only three season after the coaster was moved from Kentucky Kingdom to Darien Lake and then The Great Escape where it finally died off. After N@PC left Darien Lake for Great Escape, Darien Lake used the coaster's house as theater for the Batman Thrill Spectacular during Six Flags ownership and various other shows including Sea Lion Splash and Nik Wallenda: Beyond the Falls, but since 2012 the building stood empty.
P.S. Who knows what plans DL has for that old building in 2016?