Invade the Red Planet!
With the ETX Alien Infiltrator

Relive the Mars Mission theme with this classic 2008 set! Featuring 333 pieces and 4 minifigs, it's an out-of-this-world building experience.

🏛 Mars Mission
Set #7646

ETX Alien Infiltrator

The ETX Alien Infiltrator is a standout set from the Mars Mission theme.

🏆 Best For: Great for kids and teens interested in space themes and engaging in imaginative play scenarios. ⏱ 3 hr build 🧩 333 pcs
★★★★☆ 4.1

Fans appreciate the unique alien vehicle design and the inclusion of multiple minifigures, making it great for play. However, some find the color scheme a bit repetitive and the overall build somewhat simple for the price.

MSRP
$29.99
Best Price
$26.99
You Save
10% OFF
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📝 Our Take

The ETX Alien Infiltrator is a standout set from the Mars Mission theme. It perfectly captures the sci-fi aesthetic of humans versus aliens on Mars, featuring a unique design for the alien vehicle and a great selection of minifigures that add to the playability and collectibility.

This set is perfect for LEGO fans who enjoy space themes and imaginative play. The build is engaging without being overly complex, making it accessible to a wide range of ages, and the finished model is sturdy enough for dynamic play scenarios.

Skip this if you prefer realistic builds or are looking for a massive, intricate model. While charming, its smaller size and focus on play over pure display may not appeal to builders seeking a more challenging project; consider larger Star Wars sets for more complex builds.

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🧱 Building Experience

🧩
333
Pieces
3h
Build Time
📊
Intermediate
Difficulty
Build Highlights:
  • Unique alien vehicle design
  • Fun SNOT (Studs Not On Top) techniques used for shaping
  • Incorporation of trans-neon green elements for an otherworldly feel
  • Sturdy construction for playability

📈 Investment Analysis

↑ Trending up since release
B+
Investment Grade
⏳ Appreciating
The ETX Alien Infiltrator has shown steady price appreciation since its retirement, driven by the popularity of the Mars Mission theme and its distinctive alien designs. While not the most sought-after set, its rarity and condition contribute to its value. The rising price trend suggests continued growth, but potential investors should be mindful of market fluctuations and the availability of complete, boxed sets.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

Compare Similar Sets

Compared to other Mars Mission sets like the MT-35 Trike (7699-1) or the Exploration Launcher (7645-1), the ETX Alien Infiltrator offers a distinct alien-focused perspective. While the Exploration Launcher focuses on the human side, the Infiltrator provides a fun, albeit smaller, build with a unique alien vehicle. Collectors interested in the Martian side of the conflict may prefer this set.

4 Minifigures Included

The set includes four minifigures: two Mars Astronauts and two Martians, including an Alien Commander. The Martian Commander is particularly unique, adding to the set's collectibility.

📦 Full Parts Inventory - 110 unique parts • 309 total pieces

Tile Special 1 x 2 Grille with Bottom Groove Tile Special 1 x ...
Part #: 2412b Orange
Wedge Plate 3 x 6 Cut Corners Wedge Plate 3 x 6...
Part #: 2419 Black
Plate 2 x 2 Corner Plate 2 x 2 Corner
Part #: 2420 White
Tile 1 x 4 with Groove Tile 1 x 4 with G...
Part #: 2431 Red
Tile Special 1 x 2 with Handle Tile Special 1 x ...
Part #: 2432 Red
Tile Special 1 x 2 with Handle Tile Special 1 x ...
Part #: 2432 White
Headwear Accessory Visor For Standard Helmet Headwear Accessor...
Part #: 2447 Metallic Gold
Plate Special 1 x 2 Side Handle [Free Ends] Plate Special 1 x...
Part #: 2540 Dark Bluish Gray
Plate Special 1 x 2 Side Handle [Free Ends] Plate Special 1 x...
Part #: 2540 Orange
Bar 8L - Two Stop Rings / One Pin, Technic Figure Ski Pole [Rounded End] Bar 8L - Two Stop...
Part #: 2714a Black
Technic Pin with Friction Ridges Lengthwise and Center Slots Technic Pin with ...
Part #: 2780 Black
Plate Special 2 x 2 with 2 Pin Holes Plate Special 2 x...
Part #: 2817 Red
Brick 2 x 4 Brick 2 x 4
Part #: 3001 Red
Rock 1 x 1 Jewel / Gem 24 Facet Rock 1 x 1 Jewel ...
Part #: 30153 Trans-Neon Green
Equipment Binoculars Equipment Binoculars
Part #: 30162 Dark Bluish Gray
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Black
Plate 2 x 3 Plate 2 x 3
Part #: 3021 White
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Red
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Orange
Tool Jackhammer / Motor Hammer Tool Jackhammer /...
Part #: 30228 Dark Bluish Gray
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Black
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Lime
Brick Special 1 x 2 with Vertical Clip [Thick U Clip] Brick Special 1 x...
Part #: 30237a Black
Plate 4 x 4 Plate 4 x 4
Part #: 3031 Lime
Plate 4 x 8 Plate 4 x 8
Part #: 3035 Black
Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] Tile Special 2 x ...
Part #: 30350b Black
Bar 1 x 8 with Brick 1 x 2 Curved Top End (Axle Holder Inside Small End) Bar 1 x 8 with Br...
Part #: 30359b Black
Hinge Brick 1 x 2 Locking with 1 Finger Vertical End Hinge Brick 1 x 2...
Part #: 30364 Black
Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth Hinge Brick 1 x 2...
Part #: 30365 Dark Bluish Gray
Hinge Plate 1 x 2 Locking with 1 Finger On Top Hinge Plate 1 x 2...
Part #: 30383 Dark Bluish Gray
Slope 45° 2 x 2 Slope 45° 2 x 2
Part #: 3039 Black
Brick Special 1 x 4 with 4 Studs on One Side Brick Special 1 x...
Part #: 30414 White
Slope 45° 2 x 2 Double Convex Slope 45° 2 x 2 D...
Part #: 3045 White
Slope 45° 2 x 1 Triple Smooth Slope 45° 2 x 1 T...
Part #: 3048b White
Plate Round Corner 4 x 4 Plate Round Corne...
Part #: 30565 Lime
Brick Round 1 x 1 Open Stud Brick Round 1 x 1...
Part #: 3062b 14× Trans-Red
Fairing 1 x 4 Side Flaring Intake with Two Pins Fairing 1 x 4 Sid...
Part #: 30647 Black
Tile 2 x 2 with Groove Tile 2 x 2 with G...
Part #: 3068b Black
Tile 2 x 2 with Groove Tile 2 x 2 with G...
Part #: 3068b White
Tile 1 x 2 with Groove Tile 1 x 2 with G...
Part #: 3069b Black
Technic Brick 1 x 2 [2 Pin Holes] Technic Brick 1 x...
Part #: 32000 Dark Bluish Gray
Technic Axle and Pin Connector Angled #6 - 90° Technic Axle and ...
Part #: 32014 Black
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Technic Pin Long ...
Part #: 32054 Red
Technic Beam 1 x 5 Thick Technic Beam 1 x ...
Part #: 32316 White
Brick 1 x 2 x 2 with Inside Axle Holder Brick 1 x 2 x 2 w...
Part #: 3245b White
Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Technic Pin Conne...
Part #: 32530 Black
Technic Gear 8 Tooth Technic Gear 8 Tooth
Part #: 3647 Dark Bluish Gray
Slope 65° 2 x 2 x 2 with Bottom Tube Slope 65° 2 x 2 x...
Part #: 3678b White
Turntable 2 x 2 Plate - Top Turntable 2 x 2 P...
Part #: 3679 Light Bluish Gray
Turntable 2 x 2 Plate, Base Turntable 2 x 2 P...
Part #: 3680 Black
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 White
Technic Brick 1 x 4 [3 Pin Holes] Technic Brick 1 x...
Part #: 3701 Dark Bluish Gray
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Orange
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Lime
Slope Inverted 33° 3 x 2 [Connections between Studs] Slope Inverted 33...
Part #: 3747b Black
Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Plate Special 1 x...
Part #: 3794a Red
Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Plate Special 1 x...
Part #: 3794a White
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Red
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Black
Plate 2 x 10 Plate 2 x 10
Part #: 3832 Black
Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Plate Special 1 x...
Part #: 3839b Black
Tool Pickaxe Tool Pickaxe
Part #: 3841 Dark Bluish Gray
Technic Brick 1 x 6 [5 Pin Holes] Technic Brick 1 x...
Part #: 3894 Black
Weapon Gun / Torch (Space) [with Grooves] Weapon Gun / Torc...
Part #: 3959 Light Bluish Gray
Large Figure Weapon Spear, Drill with Axle and Hole Large Figure Weap...
Part #: 40340 Black
Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole Animal Body Part ...
Part #: 40378 Lime
Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Animal Body Part ...
Part #: 40379 Lime
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Plate Special 1 x...
Part #: 4081b White
Tile Round 2 x 2 with Bottom Cross Tile Round 2 x 2 ...
Part #: 4150 Black
Brick Curved 6 x 1 Brick Curved 6 x 1
Part #: 42022 Black
Wedge Curved 12 x 3 Right Wedge Curved 12 x...
Part #: 42060 Black
Wedge Curved 12 x 3 Left Wedge Curved 12 x...
Part #: 42061 Black
Technic Pin 1/2 Technic Pin 1/2
Part #: 4274 16× Blue
Technic Axle Pin with Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 43093 Blue
Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Equipment Weapon,...
Part #: 4349 Dark Bluish Gray
Wedge Plate 3 x 2 Right Wedge Plate 3 x 2...
Part #: 43722 Black
Wedge Plate 3 x 2 Left Wedge Plate 3 x 2...
Part #: 43723 Black
Dish 3 x 3 Inverted [Radar] Dish 3 x 3 Invert...
Part #: 43898 White
Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Hinge Plate 1 x 2...
Part #: 44302a Black
Hinge Plate 1 x 4 Locking Dual 1 Finger Hinge Plate 1 x 4...
Part #: 44568 White
Flag 2 x 2 Trapezoid with Flat Area between Clips Flag 2 x 2 Trapez...
Part #: 44676 White
Equipment Metal Detector Equipment Metal D...
Part #: 4479 Black
Brick Arch 1 x 3 Brick Arch 1 x 3
Part #: 4490 Black
Wedge Curved 16 x 4 Triple with Inner Ridges Wedge Curved 16 x...
Part #: 45301 Black
Cone 1 x 1 [No Top Groove] Cone 1 x 1 [No To...
Part #: 4589 Trans-Dark Blue
Plate Special 1 x 4 Offset with Bar Holes Plate Special 1 x...
Part #: 4590 Dark Bluish Gray
Technic Worm Gear Technic Worm Gear
Part #: 4716 Light Bluish Gray
Brick Special 1 x 1 Studs on 4 Sides Brick Special 1 x...
Part #: 4733 White
Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Technic Rotation ...
Part #: 47455 Black
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Brick Curved 2 x ...
Part #: 47457 White
Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Socket Technic Brick Spe...
Part #: 48169 Dark Bluish Gray
Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Vertical Side] Technic Brick Spe...
Part #: 48171 Dark Bluish Gray
Slope Inverted 45° 4 x 2 Double with 2 x 2 Recessed Slope Inverted 45...
Part #: 4871 White
Bar 1L with Clip Bar 1L with Clip
Part #: 48729a Black
Wheel Arch, Mudguard 4 x 2 1/2 x 2 with 2 x 2 Plate Wheel Arch, Mudgu...
Part #: 50745 Black
Windscreen 6 x 6 x 3 Canopy Half Sphere with Dual 2 Fingers Windscreen 6 x 6 ...
Part #: 50747 Trans-Orange
Slope Curved 3 x 1 No Studs Slope Curved 3 x ...
Part #: 50950 White
Slope Curved 3 x 1 No Studs Slope Curved 3 x ...
Part #: 50950 Black
Brick Special 1 x 2 with Studs on 2 Sides Brick Special 1 x...
Part #: 52107 Black
Slope 30° 1 x 1 x 2/3 (Cheese Slope) Slope 30° 1 x 1 x...
Part #: 54200 11× Lime
Flexible Ribbed Hose 8mm Ends 19L Flexible Ribbed H...
Part #: 57539 Black
Flexible Ribbed Hose 8mm Ends 19L Flexible Ribbed H...
Part #: 57539 Orange
Brick Round Corner 10 x 10 with Slope 33° Edge, Axle Hole, Facet Cutout Brick Round Corne...
Part #: 58846 Black
Technic Axle Connector Smooth [with x Hole + Orientation] Technic Axle Conn...
Part #: 59443 Black
Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Plate Special 1 x...
Part #: 6019 Black
Plate Special 1 x 2 with Clips Horizontal [Thick U-Clips] Plate Special 1 x...
Part #: 60470a Light Bluish Gray
Plate 1 x 12 Plate 1 x 12
Part #: 60479 Red
Brick Curved 1 x 2 x 1 1/3 with Curved Top Brick Curved 1 x ...
Part #: 6091 White
Tool Chainsaw Blade Tool Chainsaw Blade
Part #: 6117 Dark Bluish Gray
Launcher, Technic Brick Special 2 x 4 with 5 Studs, Axle Hole and Pin Launching Lever Launcher, Technic...
Part #: 61185 Dark Bluish Gray
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Trans-Dark Blue
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Lime
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Orange
Bar 6L with Round Cap and Partially Flat Shaft Bar 6L with Round...
Part #: 61680 Light Bluish Gray
Sticker Sheet 2 for Set 7646-1 Sticker Sheet 2 f...
Part #: 63093 [No Color/Any Color]
Sticker Sheet 1 for Set 7646-1 Sticker Sheet 1 f...
Part #: 63508 [No Color/Any Color]
Technic Axle and Pin Connector Perpendicular Technic Axle and ...
Part #: 6536 Black
Technic Brick 1 x 1 with Pin Hole Technic Brick 1 x...
Part #: 6541 White
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Technic Pin Long ...
Part #: 6558 Blue
Wedge 3 x 2 Right Wedge 3 x 2 Right
Part #: 6564 Black
Wedge 3 x 2 Left Wedge 3 x 2 Left
Part #: 6565 Black
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Hinge Plate 1 x 4...
Part #: 73983 White
The set contains a good selection of lime and trans-red elements, useful for MOC builders looking to add vibrant colors to their creations. The inclusion of Technic pins also allows for integration with other Technic models.

🛒 Where to Buy

LEGO (UK)
✓ In Stock
£19.55
eBay
✓ In Stock
$26.99
Walmart
✓ In Stock
$28.49
Target
✓ In Stock
$29.99
LEGO (US)
✓ In Stock
$29.99
LEGO (CA)
✓ In Stock
$39.99
Amazon

💎 Notable Parts

Trans-Neon Green Rock 1 x 1 Jewel / Gem 24 Facet (4x) $1.00
Lime Slope 30° 1 x 1 x 2/3 (Cheese Slope) (11x) $0.88
Trans-Red Brick Round 1 x 1 Open Stud (14x) $1.40
Est. BrickLink Part Value
$3.28

💡 MOC Potential

🚀 Larger Martian base or command center
🚗 Modified rover with enhanced armor and weapons
🤖 Alien mech suit for the Martian Commander

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Charts Inventory Statistics

110
Unique Parts
309
Total Pieces
4
Minifigures
Inventory Version: 1