The Land Before Time
The Land Before Time II: The Great Valley Adventure
The Land Before Time III: The Time of the Great Giving
The Land Before Time IV: Journey Through the Mists
The Land Before Time V: The Mysterious Island
The Land Before Time VI: The Secret of Saurus Rock
The Land Before Time VII: The Stone of Cold Fire
The Land Before Time VIII: The Big Freeze
The Land Before Time IX: Journey to Big Water
The Land Before Time X: The Great Longneck Migration

The Land Before Time XI: Invasion of the Tinysauruses
The Land Before Time XII: The Great Day of the Flyers
The Land Before Time XIII: The Wisdom of Friends
The Land Before Time XIV: Journey of the Heart

I've seen 1-10 out of all 14 movies.