How many land before time episodes are there?

there are 13 movies

1. land before time

2. the great valley

3. the time of great giving

4.journey through the mists

5.the mysterious island

6. the secret of saurus rock

7. the stone of cold fire

8. the big freeze

9. journey to big water

10. the great longneck migration

11. the invasion of the tinysaurses

12. the great day of the flyers

13. the wisdom of friends

All movies have TopRater: toprater.com/en/movies/objects/2857010-the-land-before-time-1988