Ancient Aliens Seasons 1-20 DVD Collection 11 12 V.1 2 13 14 15 16 17 18 19 Sets
(4) Seasons 13 and 14 DVD sets contain 27 episodes from Seasons 15-17. 5) Seasons 15 and 16 DVD sets contain 20 episodes from Season 18. 1) 10th Anniversary Edition DVD set contains 135 episodes (Seasons 1-12).