LEGO SET 21321 - Alternate build | International Space Station
Beyond Earth: 8 Inspiring Alternative Builds for LEGO® 21321-1 International Space Station
From the moment you peer through the transparent modules of LEGO’s International Space Station, you’re invited to imagine life beyond our atmosphere. Yet, the magic of LEGO goes far deeper than replicating real-world icons: it’s about unlocking new forms, stories, and adventures with the very same bricks. What if your ISS set could transform into agile starfighters buzzing between solar arrays? Or compact outposts on distant moons? Thanks to a vibrant community of builders on Rebrickable, the parts in set 21321-1 become the foundation for entirely new spacecraft, habitats, and cosmic wonders .
Built on the winning fan design from LEGO Ideas’ 10th Anniversary Fan Vote, 21321-1 launched in early 2020, featuring an intricate core and modular solar panels that delight both display builders and space enthusiasts alike. Community creators have since embraced its parts palette—grabs anywhere from greebled truss elements to curved panels—to design eight standout alternate MOCs. Each model reimagines the set’s components in surprising ways, demonstrating the endless potential packed into those Technic beams and transparent slopes.
In this article, we’ll explore these eight imaginative builds. Whether you’re drawn to sleek starfighters, pioneering planetary landers, or compact orbital habitats, you’ll find inspiration to repurpose your ISS set into brand-new LEGO creations that spark wonder just as much as the original. Ready to launch? Let’s dive into these stellar designs.
21321 – Space Station and Spacecrafts
Designer: febrix_1999
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21321 X-Wing
Designer: MIkita
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Viking 1, 2
Designer: budkacik
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Tiny Space Colony
Designer: GoldSkulltulaHunter
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Mariner 10
Designer: budkacik
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21321 – TIE Fighter
Designer: MIkita
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Mariner 5
Designer: budkacik
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Helios Ring
Designer: MIkita
Get the instructions with link
With these inventive MOCs, your LEGO International Space Station can evolve from a static display into a gateway for infinite stories—whether you’re defending the galaxy, charting new worlds, or building the next orbital frontier. Dive into the builds, gather your bricks, and let your creativity take flight!
