Season 1

1. No Place To Hide (Original Pilot)
2. The Reluctant Stowaway
3. The Derelict
4. Island in the Sky
5. There Were Giants In The Earth
6. The Hungry Sea
7. Welcome Stranger
8. My Friend, Mr. Nobody
9. Invaders From The Fifth Dimension
10. The Oasis
11. The Sky is Falling
12. Wish Upon a Star
13. The Raft Air
14. One Of Our Dogs Is Missing
15. Attack of the Monster Planets
16. Return From Outer Space
17. The Keeper Part 1
18. The Keeper Part 2
19. The Sky Pirate
20. Ghost In Space
21. The War Of The Robots
22. The Magic Mirror
23. The Challenge
24. The Space Trader
25. His Majesty Smith
26. The Space Croppers
27. All That Glitters
28. The Lost Civilization
29. A Change Of Space
30. Follow The Leader

Season 2

1. Blast Off Into Space
2. Wild Adventure
3. The Ghost Planet
4. The Forbidden World
5. Space Circus
6. The Prisoners Of Space
7. The Android Machine
8. The Deadly Games Of Gamma 6
9. The Thief from Outer Space
10. Curse Of Cousin Smith
11. West Of Mars
12. A Visit To Hades
13. The Wreck Of The Robot
14. The Dream Monster
15. The Golden Man
16. The Girl From The Green Dimension
17. The Questing Beast
18. The Toymaker
19. Mutiny In Space
20. The Space Vikings
21. Rocket To Earth
22. The Cave Of The Wizards
23. Treasures Of The Lost Planet
24. Revolt Of The Androids
25. The Colonists
26. Trip Through The Robot
27. The Phantom Family
28. The Mechanical Men
29. The Astral Traveler
30. The Galaxy Gift

Season 3

1. The Condemned Of Space
2. Visit To A Hostile Planet
3. Kidnapped In Space
4. Hunter's Moon
5. The Space Primevals
6. The Space Destructors
7. The Haunted Lighthouse
8. Flight Into The Future
9. Collision Of The Planets
10. The Space Creature
11. Deadliest Of The Species
12. A Day At The Zoo
13. Two Weeks In Space
14. Castles In Space
15. Anti-Matter Man
16. Target: Earth
17. Princess Of Space
18. The Time Merchant
19. The Promised Planet
20. Fugitives In Space
21. Space Beauty
22. The Flaming Planet
23. The Great Vegetable Rebellion
24. Junkyard Of Space