LEGO Sci-Fi

8,803 topics in this forum

1. LEGO Sci-Fi Ongoing - Rumors, Speculation, and Discussion 1 2 3 4 88

   By Lyichir, November 20, 2020
   • 2.2k replies
   • 292.8k views
   • 
   • Renny The Spaceman
   • 15 hours ago

2. Favorite/Inspirational Sci-Fi MOCs 1 2 3 4 12

   By danth, February 1, 2018   

   • inspiration
   • moc
   • 279 replies
   • 131.2k views
   • 
   • hikouki
   • April 28

3. WIP feedback thread 1 2 3 4 9

   By Si-MOCs, October 31, 2012   

   • WIP
   • HELP!
   • (and 3 more)

     Tagged with:

     • WIP
     • HELP!
     • Im stuck
     • advice please
     • wip thread
   • 205 replies
   • 115.9k views
   • 
   • 6180HydroSearchSub
   • October 28, 2025

4. [Contest] Summer Faction Festival

   By Bob De Quatre, July 9, 2025
   • 19 replies
   • 12k views
   • 
   • alex_lyman
   • September 23, 2025

5. LEGO Sci-Fi Launchpad

   By Piranha, March 4, 2012
   • 0 replies
   • 53.6k views
   • 
   • Piranha
   • March 4, 2012

6. [MOC] Steamcroft

   By LegoMathijs, October 14, 2025   

   • legomathijs
   • steampunk
   • (and 7 more)

     Tagged with:

     • legomathijs
     • steampunk
     • steamcroft sci-fi
     • verhicles
     • coal mine
     • factory
     • town
     • exploration
     • citizens
   • 13 replies
   • 1.6k views
   • 
   • Daiman
   • 7 hours ago

7. [MOC] J5MOC - LEGO Johnny 5 from Short Circuit

   By charavision, May 14
   • 6 replies
   • 802 views
   • 
   • charavision
   • Tuesday at 01:33 PM

8. [MOC] Jazz: Transformers

   By pjhinthehouse, October 5, 2025
   • 4 replies
   • 723 views
   • 
   • Daiman
   • June 2

9. Grohl's Space Alternate Builds 1 2 3

   By grohl, February 3, 2023
   • 59 replies
   • 24.3k views
   • 
   • Daiman
   • June 2

10. [MOD] Futuron version of 6800 Cyber Blaster

    By SpacePolice89, May 28
    • 0 replies
    • 197 views
    • 
    • SpacePolice89
    • May 28

11. Blacktron I revisited - spaceships, cars, and robots OH MY! - updated 1/21/26 with snowspeeder inspired snub fighters 1 2 3

    By Murdoch17, January 11, 2023   

    • lightyear
    • xl-15
    • (and 11 more)

      Tagged with:

      • lightyear
      • xl-15
      • car
      • blacktron
      • space base
      • spaceship
      • space
      • mod
      • robot
      • tank
      • real world moc
      • snowspeeder
      • snub fighter
    • 54 replies
    • 14.7k views
    • 
    • Murdoch17
    • May 24

12. [MOC] The Chase

    By KotZ, May 21
    • 7 replies
    • 296 views
    • 
    • KotZ
    • May 24

13. [MOC] Galaxy Starship Carrier - BDP Series 11

    By enowicki, May 12   

    • space
    • classic
    • (and 1 more)

      Tagged with:

      • space
      • classic
      • lego
    • 12 replies
    • 705 views
    • 
    • LEGO Train 12 Volts
    • May 20

14. [MOC] Fallout 1 - The Master

    By adotnamedstud, August 31, 2025
    • 3 replies
    • 7k views
    • 
    • Woltra6
    • May 19

15. BDP Series 11 Entries

    By danth, May 13   

    • bdp
    • bricklinkdesignerprogram
    • (and 1 more)

      Tagged with:

      • bdp
      • bricklinkdesignerprogram
      • space
    • 3 replies
    • 263 views
    • 
    • vangelisbricks
    • May 17

16. [MOC] Graviton Nomad

    By vangelisbricks, February 9
    • 14 replies
    • 1.2k views
    • 
    • vangelisbricks
    • May 17

17. Sentinel-Viper, a modular spacecraft

    By Legocionado, May 13
    • 3 replies
    • 259 views
    • 
    • Daiman
    • May 17

18. Space alternate builds/box art

    By SpacePolice89, May 13
    • 6 replies
    • 307 views
    • 
    • SpacePolice89
    • May 15

19. [MOC][FREE INSTRUCTIONS][ALT] Landspeeder built from a Creator cat 31163

    By Kalais, May 7
    • 0 replies
    • 250 views
    • 
    • Kalais
    • May 7

20. [MOC] Habitat-The Base

    By Ptchnk, April 29
    • 8 replies
    • 446 views
    • 
    • hikouki
    • May 4

21. [MOC] M:Tron Speeder

    By Kalais, April 19
    • 7 replies
    • 484 views
    • 
    • LEGO Train 12 Volts
    • May 4

22. [MOC] SXRG34 Super Silhouette (Cyberpunk Nissan LBER34 Skyline)

    By Sérgio, April 30   

    • cyberpunk
    • car
    • (and 4 more)

      Tagged with:

      • cyberpunk
      • car
      • nissan
      • dystopian
      • cyborg
      • metal
    • 2 replies
    • 423 views
    • 
    • Daiman
    • May 4

23. [MOC] future earth CAT builds

    By Daiman, April 28
    • 2 replies
    • 295 views
    • 
    • Daiman
    • May 3

24. [MOD] Futuron version of 6806 Surface Hopper

    By SpacePolice89, April 24
    • 10 replies
    • 454 views
    • 
    • Daiman
    • April 27

25. Show me some Transformers MOC's 1 2

    By Soundvox, November 20, 2022
    • 38 replies
    • 17.3k views
    • 
    • Soundvox
    • April 21

26. MOC: Speederbike - Alcea

    By Peppermint_M, April 5
    • 3 replies
    • 389 views
    • 
    • Feuer Zug
    • April 19

27. [MOC] Classic space redux...the rest 1 2

    By Daiman, January 9
    • 43 replies
    • 2.5k views
    • 
    • Daiman
    • April 19

28. [MOC] Space Cargo

    By LegoMathijs, April 16   

    • legomathijs
    • space
    • (and 3 more)

      Tagged with:

      • legomathijs
      • space
      • cargo
      • travel
      • containers
    • 1 reply
    • 294 views
    • 
    • Daiman
    • April 17

29. [MOC] M:Tron scientific research vehicle

    By Kalais, February 14   

    • febrovery
    • febrover
    • 10 replies
    • 774 views
    • 
    • Spaceman_
    • April 16

30. [MOC] Vidiyo Transporter - B0XVID

    By Kalais, March 17
    • 13 replies
    • 891 views
    • 
    • Spaceman_
    • April 16

31. [MOC] M:Tron microscale monorail

    By Kalais, March 29
    • 6 replies
    • 418 views
    • 
    • Spaceman_
    • April 16

32. Classic space ships

    By CP5670, April 12
    • 6 replies
    • 1.1k views
    • 
    • Kalais
    • April 16

33. [Sci-Fi 90s] video and picture

    By Lego_fan_cam, January 17
    • 16 replies
    • 1.1k views
    • 
    • SpacePolice89
    • April 14

34. [MOC] Galaxy Explorer drone

    By AmperZand, March 22
    • 12 replies
    • 721 views
    • 
    • Spaceman_
    • April 12

35. Star Ion Tri-Fighter [MOC]

    By danth, February 11   

    • space moc spaceship
    • 10 replies
    • 826 views
    • 
    • Spaceman_
    • April 11

36. Cyberpunk Blacktron Base

    By Operacion Saturno, February 26   

    • blacktron
    • blacktron1
    • (and 4 more)

      Tagged with:

      • blacktron
      • blacktron1
      • base
      • space
      • rover
      • spaceship
    • 4 replies
    • 839 views
    • 
    • Spaceman_
    • April 9

37. MTron Beacon Tracer

    By Daiman, March 31
    • 7 replies
    • 406 views
    • 
    • Spaceman_
    • April 9

38. The Hail Mary & Blip-A

    By nopingrid, April 3
    • 5 replies
    • 989 views
    • 
    • Mandalorianknight
    • April 6

39. [Blacktron] Outpost

    By Horlack Bricks, May 31, 2024
    • 13 replies
    • 2.3k views
    • 
    • Spaceman_
    • April 5

40. [MOC] M:Tron sets

    By Daiman, April 1
    • 7 replies
    • 414 views
    • 
    • Spaceman_
    • April 5

41. (MOC): M:Tron Mining Base

    By Spaceman_, April 4   

    • m:tron
    • space
    • (and 1 more)

      Tagged with:

      • m:tron
      • space
      • mine
    • 2 replies
    • 410 views
    • 
    • Spaceman_
    • April 5

42. LUNAR PATROLLER VEHICLE

    By Operacion Saturno, February 3, 2023
    • 2 replies
    • 840 views
    • 
    • Daiman
    • April 4

43. [MOC] Space Blood Orcs

    By Kalais, March 15
    • 8 replies
    • 703 views
    • 
    • Kalais
    • April 2

44. [MOC] Com-Sat base

    By Kalais, January 14
    • 6 replies
    • 976 views
    • 
    • Kalais
    • March 29

45. [MOC] Blacktron II encampment

    By Kalais, November 25, 2025   

    • blacktron2
    • moc
    • (and 3 more)

      Tagged with:

      • blacktron2
      • moc
      • base
      • lego
      • kalais
    • 10 replies
    • 1.2k views
    • 
    • Kalais
    • March 29

46. Speeder Bike 5AUS13 - "Saucy"

    By Peppermint_M, March 17
    • 2 replies
    • 342 views
    • 
    • Peppermint_M
    • March 18

47. [MOD] Classic Space Version of 6903 Bug Blaster

    By SpacePolice89, February 13
    • 12 replies
    • 795 views
    • 
    • SpacePolice89
    • March 11

48. [MOC] Spectron Space Plane

    By SpacePolice89, February 6
    • 7 replies
    • 750 views
    • 
    • SpacePolice89
    • March 7

49. [MOC] Porco Rosso's hideout and his Savoia S.21

    By Norton74, February 25   

    • miyazaki
    • porco
    • (and 4 more)

      Tagged with:

      • miyazaki
      • porco
      • rosso
      • hayao
      • hideout
      • cove
    • 12 replies
    • 1.2k views
    • 
    • Norton74
    • March 1

50. [MOC] Battletech/Mechwarrior King Crab Mech

    By Kevin Hansen, December 18, 2020   

    • battletech
    • mech
    • (and 1 more)

      Tagged with:

      • battletech
      • mech
      • robot
    • 15 replies
    • 10k views
    • 
    • l0renZo
    • February 26