All Toys & GamesEaster ToysNew ToysShop Toys by BrandAction FiguresAction Figures and PlaysetsAriel ToysAvengers ToysBuilding BlocksBuilding Play SetsBuilding Sets for BoysBuilding Sets for GirlsBuilding Toys Ages 12+Building Toys Ages 2 to 4Building Toys Ages 5 to 7Building Toys Ages 8 to 11Costumes For KidsDisney ToysDragon Ball ToysDragon ToysEngineering ToysHalo ToysLEGOMickey Mouse ToysMinnie Mouse ToysModel KitsNovelty ToysPretend PlaySonic ToysSpider-Man ToysSpongeBob SquarePants ToysStar Wars ToysStitch ToysSurprise ToysThe Little Mermaid ToysToys for AdultsToys for Kids 12 Years & UpToys for Kids 2 to 4 YearsToys for Kids 5 to 7 YearsToys for Kids 8 to 11 Years
Sort by|
All Toys & GamesEaster ToysNew ToysShop Toys by BrandAction FiguresAction Figures and PlaysetsAriel ToysAvengers ToysBuilding BlocksBuilding Play SetsBuilding Sets for BoysBuilding Sets for GirlsBuilding Toys Ages 12+Building Toys Ages 2 to 4Building Toys Ages 5 to 7Building Toys Ages 8 to 11Costumes For KidsDisney ToysDragon Ball ToysDragon ToysEngineering ToysHalo ToysLEGOMickey Mouse ToysMinnie Mouse ToysModel KitsNovelty ToysPretend PlaySonic ToysSpider-Man ToysSpongeBob SquarePants ToysStar Wars ToysStitch ToysSurprise ToysThe Little Mermaid ToysToys for AdultsToys for Kids 12 Years & UpToys for Kids 2 to 4 YearsToys for Kids 5 to 7 YearsToys for Kids 8 to 11 Years
Alien Building(60)
Uses item details. Price when purchased online
50+ bought since yesterday LEGO Classic Green Baseplate, Creative Toy for Back to School, Square 32x32 Stud Foundation to Build and Display Brick Creations, Great for Grassy Nature Landscapes and Back to School Supplies, 11023 From $7.97

Sponsored
From$797
LEGO Classic Green Baseplate, Creative Toy for Back to School, Square 32x32 Stud Foundation to Build and Display Brick Creations, Great for Grassy Nature Landscapes and Back to School Supplies, 11023
11714.7 out of 5 Stars. 1171 reviews
Save with
LEGO Minifigures Series 26 Space Collectible Toy Figures 71046 $9.88

Sponsored
$988
current price $9.88LEGO Minifigures Series 26 Space Collectible Toy Figures 71046
1193.9 out of 5 Stars. 119 reviews
Save with
MEGA Aliens Alien Queen Figure Building Set $139.00

$13900
current price $139.00MEGA Aliens Alien Queen Figure Building Set
324.2 out of 5 Stars. 32 reviews
Reduced price YOUEEFY Alien Monster Building Blocks Set, ABS From $25.49

3 options
Available in additional 3 optionsFrom$2549
YOUEEFY Alien Monster Building Blocks Set, ABS
Mega Construx Heroes Aliens Transparent Blue Xenomorph, Building Toys for Kids and Collectors $35.97

$3597
current price $35.97Mega Construx Heroes Aliens Transparent Blue Xenomorph, Building Toys for Kids and Collectors
64 out of 5 Stars. 6 reviews
Save with
PLUS PLUS - Alien - 70 Piece Tube, Construction Building Stem/Steam Toy, Mini Puzzle Blocks for Kids $14.89

$1489
current price $14.89PLUS PLUS - Alien - 70 Piece Tube, Construction Building Stem/Steam Toy, Mini Puzzle Blocks for Kids
JAM Kids Toy Playsets, Alien Domino Building Game, Sold Individually $19.99

$1999
current price $19.99JAM Kids Toy Playsets, Alien Domino Building Game, Sold Individually
367PCS MOC-168210 Space War B1 Battle Droid Building Blocks Robot Alien Model Bricks Assemble Toys Creative Children Gift

367PCS MOC-168210 Space War B1 Battle Droid Building Blocks Robot Alien Model Bricks Assemble Toys Creative Children Gift
LEGO Classic Alien Minifigure Interlocking Block Building Set $28.95

$2895
current price $28.95LEGO Classic Alien Minifigure Interlocking Block Building Set
15 out of 5 Stars. 1 reviews
Save with
Queen Skeleton Building Blocks Set for Xenomorph Alien Monster MOC Bricks Toys 903pcs $76.99

$7699
current price $76.99Queen Skeleton Building Blocks Set for Xenomorph Alien Monster MOC Bricks Toys 903pcs
LEGO Alien DJ BeatBox 43104 Building Set (73 Pieces) $24.99

$2499
current price $24.99LEGO Alien DJ BeatBox 43104 Building Set (73 Pieces)
364.3 out of 5 Stars. 36 reviews
GZBricker Alien uilding Blocks Sets Compatible with Lego Movie Monster Technicial MechWarrior Model for Adults Boys $36.99

$3699
current price $36.99GZBricker Alien uilding Blocks Sets Compatible with Lego Movie Monster Technicial MechWarrior Model for Adults Boys
Save with
LEGO 40687 Alien Space Diner 239pcs Limited Edition $40.00

$4000
current price $40.00LEGO 40687 Alien Space Diner 239pcs Limited Edition
85 out of 5 Stars. 8 reviews
Save with
BrixVibe Orc Sarr Building Set Compatible with Lego Action Figure Alien for Boys 8 14 Adults 1776Pcs $50.99

$5099
current price $50.99BrixVibe Orc Sarr Building Set Compatible with Lego Action Figure Alien for Boys 8 14 Adults 1776Pcs
Save with
LEGO 40715 Alien Pack 181pcs $29.99

$2999
current price $29.99LEGO 40715 Alien Pack 181pcs
154.5 out of 5 Stars. 15 reviews
Save with
UFO Flying saucer Building block Alien Ship Spacecraft Astronaut Creative assembly ornament puzzle toy boy gift

UFO Flying saucer Building block Alien Ship Spacecraft Astronaut Creative assembly ornament puzzle toy boy gift
Predator Minifigure Building Blocks Set Alien vs. Predator Iconic Hunter Detailed Collectors Item Compatible with Major Brick Brands $47.00
$4700
current price $47.00Predator Minifigure Building Blocks Set Alien vs. Predator Iconic Hunter Detailed Collectors Item Compatible with Major Brick Brands
LEGO 40716 Alien Planet Habitat 206pcs $29.99

$2999
current price $29.99LEGO 40716 Alien Planet Habitat 206pcs
144.4 out of 5 Stars. 14 reviews
Save with
Alien vs Predator Super Deformed Alien Queen Model Kit $107.98

$10798
current price $107.98Alien vs Predator Super Deformed Alien Queen Model Kit
Save with
Crazy Flower Shop Alien Man-Eating Plant Building Blocks Set, Horror Botanical Model with Pot Base, Collectible for Fans, Compatible with Major Brick Brands $55.00

$5500
current price $55.00Crazy Flower Shop Alien Man-Eating Plant Building Blocks Set, Horror Botanical Model with Pot Base, Collectible for Fans, Compatible with Major Brick Brands
LEGO Classic Creative Space Planets Buildable Solar System, Creative Learning Toy with Alien, Rocket Ship, and Glow in the Dark Bricks, 11037 $50.94

$5094
current price $50.94LEGO Classic Creative Space Planets Buildable Solar System, Creative Learning Toy with Alien, Rocket Ship, and Glow in the Dark Bricks, 11037
794.6 out of 5 Stars. 79 reviews
Save with
LEGO City Space Explorer Rover and Alien Life Toy, Space Gift for Boys and Girls Ages 6 and Up with 2 Minifigures, Robot and Extraterrestrial Figures, Pretend Play STEM Toy, 60431 $44.92

$4492
current price $44.92LEGO City Space Explorer Rover and Alien Life Toy, Space Gift for Boys and Girls Ages 6 and Up with 2 Minifigures, Robot and Extraterrestrial Figures, Pretend Play STEM Toy, 60431
1324.8 out of 5 Stars. 132 reviews
Save with
Remocguys Space War Transport Vehicle Building Sets Compatible with Lego Car Alien Soldier Model for Adults Boy $34.99

$3499
current price $34.99Remocguys Space War Transport Vehicle Building Sets Compatible with Lego Car Alien Soldier Model for Adults Boy
Save with
LEGO City Command Rover and Crane Loader Outer Space Toy Building Set, 4 Astronaut Toy Minifigures, Space Robot, 2 Alien Action Figures, Gift for 7 Year Old Boys, Girls, and Kids, 60432

2 options
Available in additional 2 optionsLEGO City Command Rover and Crane Loader Outer Space Toy Building Set, 4 Astronaut Toy Minifigures, Space Robot, 2 Alien Action Figures, Gift for 7 Year Old Boys, Girls, and Kids, 60432
464.8 out of 5 Stars. 46 reviews
Save with
LEGO Space Alien Striker 7049 $57.98

$5798
current price $57.98LEGO Space Alien Striker 7049
34 out of 5 Stars. 3 reviews
Alien Dungeon Underdweller Mortar w/Crew New $8.00

$800
current price $8.00Alien Dungeon Underdweller Mortar w/Crew New
LEGO City Space Explorer Rover & Alien Life 60431 Building Set | 311 Pieces | Astronaut Figures, Robot, Alien Life Playset $51.00

$5100
current price $51.00LEGO City Space Explorer Rover & Alien Life 60431 Building Set | 311 Pieces | Astronaut Figures, Robot, Alien Life Playset
15 out of 5 Stars. 1 reviews
Save with
LEGO City Modular Galactic Spaceship Toy - Buildable Space Toy for Kids, Boys and Girls, Ages 7+ - Includes 4 Astronaut Minifigures & Alien Figure - Gift Idea for Birthdays and Holidays - 60446 $137.99

$13799
current price $137.99LEGO City Modular Galactic Spaceship Toy - Buildable Space Toy for Kids, Boys and Girls, Ages 7+ - Includes 4 Astronaut Minifigures & Alien Figure - Gift Idea for Birthdays and Holidays - 60446
464.8 out of 5 Stars. 46 reviews
Save with
Alien Lifeform with Panoramic Display $38.99

$3899
current price $38.99Alien Lifeform with Panoramic Display
Alien vs Predator Super Deformed Predator Model Kit $107.98

$10798
current price $107.98Alien vs Predator Super Deformed Predator Model Kit
Pre-Owned Life on Mars Alien Encounter Mini Set LEGO 1195 [Bagged] $53.33
![Pre-Owned Life on Mars Alien Encounter Mini Set LEGO 1195 [Bagged]](https://i5.walmartimages.com/asr/08be4dc5-0f27-4152-804a-4bfe4f4a913f.eb836a0b68ac33a9c16ffb3c60e3a8c0.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$5333
current price $53.33Pre-Owned Life on Mars Alien Encounter Mini Set LEGO 1195 [Bagged]
ArcKnight Alien Bestiary New $30.00

$3000
current price $30.00ArcKnight Alien Bestiary New
Pre-Owned LEGO Space Alien Striker 7049 $56.98

$5698
current price $56.98Pre-Owned LEGO Space Alien Striker 7049
Pre-Owned Alien Conquest UFO Abduction Set LEGO 7052 [Damaged Package] $202.98
![Pre-Owned Alien Conquest UFO Abduction Set LEGO 7052 [Damaged Package]](https://i5.walmartimages.com/asr/6b46c208-3941-4267-8adf-feef19ec379b.1b7d32a24b1052bed824a05137a37af6.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$20298
current price $202.98Pre-Owned Alien Conquest UFO Abduction Set LEGO 7052 [Damaged Package]
Eaglemoss Alien USCSS Nostromo Replica Ship XL Edition $99.99

$9999
current price $99.99Eaglemoss Alien USCSS Nostromo Replica Ship XL Edition
15 out of 5 Stars. 1 reviews
LEGO City Spaceship and Asteroid Discovery Toy Building Set, Gift for Kids Ages 4 Years Old and Up who Love Pretend Play, Includes 2 Space Crew Minifigures, Alien, Crystals, and Crane Toy, 60429 $34.99

$3499
current price $34.99LEGO City Spaceship and Asteroid Discovery Toy Building Set, Gift for Kids Ages 4 Years Old and Up who Love Pretend Play, Includes 2 Space Crew Minifigures, Alien, Crystals, and Crane Toy, 60429
934.8 out of 5 Stars. 93 reviews
Save with
BrickWonders Dragon Ball GT Minifigures Toys, 8Pcs Black Goku Building Set | Alien Invasion Party Favors & Collector Gifts for Boys 8+ $33.98

$3398
current price $33.98BrickWonders Dragon Ball GT Minifigures Toys, 8Pcs Black Goku Building Set | Alien Invasion Party Favors & Collector Gifts for Boys 8+
Sluban 731G SPACE - NautilusX ISS Demonstrator Building Brick Kit (71pcs) $16.99

$1699
current price $16.99Sluban 731G SPACE - NautilusX ISS Demonstrator Building Brick Kit (71pcs)
City Space Science Lab Toy Building Set 60439 Educational STEM Kit for Kids Laboratory Playset 560 Pieces $69.97

$6997
current price $69.97City Space Science Lab Toy Building Set 60439 Educational STEM Kit for Kids Laboratory Playset 560 Pieces
14 out of 5 Stars. 1 reviews
Alien Conquest ADU Jet Pack Mini Set LEGO 30141 [Bagged] $21.95
![Alien Conquest ADU Jet Pack Mini Set LEGO 30141 [Bagged]](https://i5.walmartimages.com/seo/Alien-Conquest-ADU-Jet-Pack-Mini-Set-LEGO-30141-Bagged_c348831e-4cf7-461a-85c5-55c21f97d6ef.86bc17aa8b021608cac0ee8a8152bd7c.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$2195
current price $21.95Alien Conquest ADU Jet Pack Mini Set LEGO 30141 [Bagged]
Pre-Owned Toy Story 3 Green Alien with Space Vehicle Mini Set LEGO 30070 [Bagged] $30.98
![Pre-Owned Toy Story 3 Green Alien with Space Vehicle Mini Set LEGO 30070 [Bagged]](https://i5.walmartimages.com/asr/0881c9fb-39b2-4563-b2ae-b177093a04d6.f419c83e8d0362d34053a46ac476d123.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$3098
current price $30.98Pre-Owned Toy Story 3 Green Alien with Space Vehicle Mini Set LEGO 30070 [Bagged]
Mega Bloks Kubros - Ripley $49.99

$4999
current price $49.99Mega Bloks Kubros - Ripley
Other options to consider(93)
Alien Space Colony Defense Battle Set, 7 Years & Up $45.90

$4590
current price $45.90Alien Space Colony Defense Battle Set, 7 Years & Up
84.4 out of 5 Stars. 8 reviews
Mega Construx Aliens Xenomorph Eggs Blind Figures from Series 2 Black Series Pack of 3 $74.99

$7499
current price $74.99Mega Construx Aliens Xenomorph Eggs Blind Figures from Series 2 Black Series Pack of 3
Save with
Alien - Xenomorph Attack - Advanced-APC Vehicle $47.00

$4700
current price $47.00Alien - Xenomorph Attack - Advanced-APC Vehicle
134.3 out of 5 Stars. 13 reviews
775pcs Space Exploration Rotation Solar System Building Blocks Set, 9 Planets with Spaceship, Educational Toys for Science Experiments, Perfect Christmas Thanksgiving Day Gift for Kids&teens Over 8

775pcs Space Exploration Rotation Solar System Building Blocks Set, 9 Planets with Spaceship, Educational Toys for Science Experiments, Perfect Christmas Thanksgiving Day Gift for Kids&teens Over 8
LEGO City Space Base and Rocket Launchpad 60434 $173.94

$17394
current price $173.94LEGO City Space Base and Rocket Launchpad 60434
734.7 out of 5 Stars. 73 reviews
Save with
LEGO Minifigure Series 26 Collectible Interlocking Block Building Sets Plastic Space $11.95

$1195
current price $11.95LEGO Minifigure Series 26 Collectible Interlocking Block Building Sets Plastic Space
15 out of 5 Stars. 1 reviews
Save with
Sluban Space Transformer X1-Hessen Chaser Building Brick Kit (108 Pcs) $20.40

$2040
current price $20.40Sluban Space Transformer X1-Hessen Chaser Building Brick Kit (108 Pcs)
LEGO 60439 City Space Science Lab Toy Building Set $58.95

$5895
current price $58.95LEGO 60439 City Space Science Lab Toy Building Set
714.6 out of 5 Stars. 71 reviews
Save with
Sluban 731F SPACE - Scientific Space Station Building Brick Kit (65pcs) $17.10

$1710
current price $17.10Sluban 731F SPACE - Scientific Space Station Building Brick Kit (65pcs)
The LEGO 2 Movie Welcome to Apocalypseburg! 70840

The LEGO 2 Movie Welcome to Apocalypseburg! 70840
364.9 out of 5 Stars. 36 reviews
LEGO Minifigure Series 26 Space Alien Beetlezoid (SEALED) $12.95

$1295
current price $12.95LEGO Minifigure Series 26 Space Alien Beetlezoid (SEALED)
Alien (Toy Story) - LEGO Disney Collectible Minifigure (Series 1) $11.75 Was $13.95

Now$1175
current price Now $11.75, Was $13.95$13.95
Alien (Toy Story) - LEGO Disney Collectible Minifigure (Series 1)
55 out of 5 Stars. 5 reviews
Save with
Space Alien Series 21 Lego MiniFigure 2" (New Loose) $9.49

$949
current price $9.49Space Alien Series 21 Lego MiniFigure 2" (New Loose)
25 out of 5 Stars. 2 reviews
Save with
LEGO DUPLO 3 in 1 Space Shuttle Adventure Rocket Ship Building Set, Kids Educational Space Discovery Toy for 3-Year-Olds and Up, Develops Preschool Kids Learning and Fine Motor Skills, 10422 $59.89

$5989
current price $59.89LEGO DUPLO 3 in 1 Space Shuttle Adventure Rocket Ship Building Set, Kids Educational Space Discovery Toy for 3-Year-Olds and Up, Develops Preschool Kids Learning and Fine Motor Skills, 10422
164.3 out of 5 Stars. 16 reviews
Save with
LEGO Series 21 Alien Minifigure [No Packaging] $8.89
![LEGO Series 21 Alien Minifigure [No Packaging]](https://i5.walmartimages.com/seo/LEGO-Series-21-Alien-Minifigure-No-Packaging_69584a6a-7228-499e-a09a-36f375d44e2f.201292b44bd7804d7112032064378425.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$889
current price $8.89LEGO Series 21 Alien Minifigure [No Packaging]
25 out of 5 Stars. 2 reviews
Sluban 738 Space Rocket Base Building Brick Kit (733 pcs) $51.58

$5158
current price $51.58Sluban 738 Space Rocket Base Building Brick Kit (733 pcs)
Sluban 731A SPACE - Apollo Spacecraft Building Brick Kit (67pcs) $17.10

$1710
current price $17.10Sluban 731A SPACE - Apollo Spacecraft Building Brick Kit (67pcs)
X-Plant Astronaut Boy Building Block $34.99

$3499
current price $34.99X-Plant Astronaut Boy Building Block
LEGO Collectible Series 9 Alien Avenger Minifigure - Complete Set $18.00

$1800
current price $18.00LEGO Collectible Series 9 Alien Avenger Minifigure - Complete Set
LEGO Minifigure Series 26 Space Alien Tourist (SEALED) $11.95

$1195
current price $11.95LEGO Minifigure Series 26 Space Alien Tourist (SEALED)
Save with
LEGO Creator Fairground Carousel 31095 Space-Themed Building Kit (595 Pieces) $99.99

$9999
current price $99.99LEGO Creator Fairground Carousel 31095 Space-Themed Building Kit (595 Pieces)
215 out of 5 Stars. 21 reviews
LEGO Toy Story Little Green Alien Man Minifigure [No Packaging] $13.89
![LEGO Toy Story Little Green Alien Man Minifigure [No Packaging]](https://i5.walmartimages.com/seo/LEGO-Toy-Story-Little-Green-Alien-Man-Minifigure-No-Packaging_fde21c71-41e7-4c82-a295-069f82baacc0.06d1efc4cd0ad01bf667575327416ec5.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$1389
current price $13.89LEGO Toy Story Little Green Alien Man Minifigure [No Packaging]
Save with
Popular in Alien Building
Related Products
Plant Building Brick Kit - Catyledon by Wizardi F07N11-26-20(113)
Plant Building Brick Kit - Catyledon by Wizardi F07N11-26-20(113)$12.59current price $12.59Alien Conquest ADU Jet Pack Mini Set LEGO 30141 [Bagged]
Alien Conquest ADU Jet Pack Mini Set LEGO 30141 [Bagged]$21.95current price $21.95GZBrick Mechanical Manta Ray Building Sets Compatible with Lego Animal for Adults Boys 966PCS
GZBrick Mechanical Manta Ray Building Sets Compatible with Lego Animal for Adults Boys 966PCS$33.99current price $33.99GZBrick Rabbit Police Building Sets Compatible with Lego Animals for Boys Girls 1387PCS
GZBrick Rabbit Police Building Sets Compatible with Lego Animals for Boys Girls 1387PCS$19.99current price $19.99LEGO Classic Alien Minifigure Interlocking Block Building Set
LEGO Classic Alien Minifigure Interlocking Block Building Set$28.95current price $28.95TzFioy Neuschwanstein Castle Germany Micro Brick Building Set (3948 Pieces) – Landmark Model Educational Toy Gift for Kids and Adults
TzFioy Neuschwanstein Castle Germany Micro Brick Building Set (3948 Pieces) – Landmark Model Educational Toy Gift for Kids and Adults$55.99current price $55.99Space Alien Series 21 Lego MiniFigure 2" (New Loose)
Space Alien Series 21 Lego MiniFigure 2" (New Loose)$9.95current price $9.95Vyytoz Rockefeller Center New York Building Set, 928Pcs Architecture Model, Creative Display Toy, World Landmark Collection
Vyytoz Rockefeller Center New York Building Set, 928Pcs Architecture Model, Creative Display Toy, World Landmark Collection$52.99current price $52.99LEGO 40716 Alien Planet Habitat 206pcs
LEGO 40716 Alien Planet Habitat 206pcs$29.99current price $29.99LEGO Series 14 Mad Scientist Minifigure [No Packaging]
LEGO Series 14 Mad Scientist Minifigure [No Packaging]$14.95current price $14.95Shadow of the White Moon Building Brick Mini Potted Plant F07M9-12(104)-C4
Shadow of the White Moon Building Brick Mini Potted Plant F07M9-12(104)-C4$8.99current price $8.99LEGO Minifigure Series 26 Space Alien Beetlezoid (SEALED)
LEGO Minifigure Series 26 Space Alien Beetlezoid (SEALED)$12.95current price $12.95LEGO Alien DJ BeatBox 43104 Building Set (73 Pieces)
LEGO Alien DJ BeatBox 43104 Building Set (73 Pieces)$24.99current price $24.99GZBrick Sunflowers Bouquet Botanical Building Sets Not Compatible with Lego Flowers for Adults Girls 577PCS
GZBrick Sunflowers Bouquet Botanical Building Sets Not Compatible with Lego Flowers for Adults Girls 577PCS$10.99current price $10.99SlubanKids Car Club Knight, Bird, Butterfly, Leopard, Building Blocks Building Toy 643 Pcs & Dimple Kids Small Washable Coloring Play Mat with 12 Washable Markers
SlubanKids Car Club Knight, Bird, Butterfly, Leopard, Building Blocks Building Toy 643 Pcs & Dimple Kids Small Washable Coloring Play Mat with 12 Washable Markers$44.99current price $44.99