0. Unaired Pilot
SEASON 1
1. The Reluctant Stowaway
2. The Derelict
3. Island in the Sky
4. There Were Giants In The Earth
5. The Hungry Sea
6. Welcome Stranger
7. My Friend, Mr. Nobody
8. Invaders From The Fifth Dimension
9. The Oasis
10. The Sky is Falling
11. Wish Upon a Star
12. The Raft
13. One Of Our Dogs Is Missing
14. Attack of the Monster Plants
15. Return From Outer Space
16. The Keeper, Part 1
17. The Keeper, Part 2
18. The Sky Pirate
19. Ghost In Space
20. The War Of The Robots
21. The Magic Mirror
22. The Challenge
23. The Space Trader
24. His Majesty Smith
25. The Space Croppers
26. All That Glitters
27. The Lost Civilization
28. A Change Of Space
29. Follow The Leader
SEASON 2
30. Blast Off Into Space
31. Wild Adventure
32. The Ghost Planet
33. The Forbidden World
34. Space Circus
35. The Prisoners Of Space
36. The Android Machine
37. The Deadly Games Of Gamma 6
38. The Thief From Outer Space
39. Curse Of Cousin Smith
40. West Of Mars
41. A Visit To Hades
42. The Wreck Of The Robot
43. The Dream Monster
44. The Golden Man
45. The Girl From The Green Dimension
46. The Questing Beast
47. The Toymaker
48. Mutiny In Space
49. The Space Vikings
50. Rocket To Earth
51. The Cave Of The Wizards
52. Treasures Of The Lost Planet
53. Revolt Of The Androids
54. The Colonists
55. Trip Through The Robot
56. The Phantom Family
57. The Mechanical Men
58. The Astral Traveler
59. The Galaxy Gift
SEASON 3
60. The Condemned Of Space
61. Visit To A Hostile Planet
62. Kidnapped In Space
63. Hunter's Moon
64. The Space Primevals
65. The Space Destructors
66. The Haunted Lighthouse
67. Flight Into The Future
68. Collision Of The Planets
69. The Space Creature
70. Deadliest Of The Species
71. A Day At The Zoo
72. Two Weeks In Space
73. Castles In Space
74. Anti-Matter Man
75. Target: Earth
76. Princess Of Space
77. The Time Merchant
78. The Promised Planet
79. Fugitives In Space
80. Space Beauty
81. The Flaming Planet
82. The Great Vegetable Rebellion
83. Junkyard Of Space