The original Ice Age film series contains five feature films.
The five films are Ice Age, Ice Age: The Meltdown, Ice Age: Dawn of the Dinosaurs, Ice Age: Continental Drift, and Ice Age: Collision Course. They were released between 2002 and 2016.
The franchise also includes television specials and the spin-off film The Ice Age Adventures of Buck Wild. Those projects are separate from the five-film original feature series, which is why broader counts can produce different totals.
Blue Sky Studios produced the five original theatrical features. The films follow recurring characters including Manny, Sid, Diego, Ellie, and Scrat, although the settings and supporting casts change substantially across the series.