ETX Alien Mothership Assault (7691-1) is a Mars Mission LEGO set released in 2007 with 434 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Mars Mission sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 7 minifigures and 143 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2007 (19 years ago — may be retired)
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Catalog scale
434 parts listed · 143 inventory lines tracked
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Minifigures
7 in this set's inventory — verify completeness when buying used
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Build manual
Digital booklet available on this page — use it to verify bag contents
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Shipping weight (est.)
~733 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Building instructions
Official LEGO instructions — read on BrickID
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Minifigures in ETX Alien Mothership Assault
Parts in this set
143 parts · page 1 of 3 · updating…
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Aero Tube 32 x 3 x 2 1/323221 · ×1 · Trans-Orange -
Aero Tube Joiner 3 x 4 x 330585b · ×2 · Trans-Clear -
Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section40379 · ×6 · Lime -
Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole40378 · ×8 · Lime -
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small53451 · ×2 · Red -
Antenna 1 x 4 with Rounded Top3957a · ×8 · Trans-Neon Green -
Bar 1 x 4 x 26187 · ×1 · Black -
Bar 4L (Lightsaber Blade / Wand)30374 · ×2 · Light Bluish Gray -
Brick 1 x 13005 · ×4 · Light Bluish Gray -
Brick 1 x 23004 · ×1 · White -
Brick 1 x 43010 · ×3 · White -
Brick 1 x 43010 · ×2 · Black -
Brick 1 x 63009 · ×2 · Light Bluish Gray -
Brick 2 x 33002 · ×1 · White -
Brick 2 x 43001 · ×1 · Black -
Brick 2 x 62456 · ×1 · Black -
Brick Arch 1 x 4 x 26182 · ×1 · White -
Brick Curved 6 x 142022 · ×2 · Black -
Brick Round 2 x 2 with Axle Hole3941 · ×2 · Trans-Neon Green -
Brick Round 2 x 2 with Axle Hole3941 · ×2 · White -
Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud30151a · ×2 · Trans-Clear -
Brick Round 2 x 2 x 2 Robot Body, Axle Holder 'X' Orientation30361b · ×2 · White -
Brick Round Corner 10 x 10 with Slope 33° Edge, Axle Hole, Facet Cutout58846 · ×6 · Black -
Brick Sloped 2 x 2 No Studs, with 3 Side Pistons Raised Edges30603 · ×3 · Black -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×4 · White -
Brick Sloped 45° 2 x 23039 · ×3 · Black -
Brick Sloped 45° 2 x 2 with Radar Screen Print3039pr0005 · ×1 · White -
Brick Sloped 65° 2 x 2 x 2 with Bottom Tube3678b · ×2 · Dark Bluish Gray -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/4211436.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · Light Bluish Gray -
Brick Special 1 x 1 with Headlight4070 · ×6 · Black -
Brick Special 1 x 2 with Pin2458 · ×2 · Light Bluish Gray -
Brick Special 1 x 2 with Pin2458 · ×1 · Dark Bluish Gray -
Brick Special 1 x 4 with Groove2653 · ×2 · Light Bluish Gray -
Brick Wedged, Curved 10 x 3 Left50955 · ×2 · Black -
Brick Wedged, Curved 10 x 3 Right50956 · ×2 · Black -
Brick Wedged, Curved 12 x 3 Left42061 · ×1 · White -
Brick Wedged, Curved 12 x 3 Right42060 · ×1 · White -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618843.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×2 · Trans-Dark Blue -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618841.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×8 · Trans-Red -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618849.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×8 · Trans-Neon Green -
![Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°]](https://cdn.rebrickable.com/media/parts/elements/4110049.jpg)
Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°]4285b · ×2 · Trans-Neon Green -
Equipment Goblet / Glass2343 · ×2 · Black -
Flexible Ribbed Hose 8mm Ends 19L57539 · ×3 · Orange -
Handlebars30031 · ×2 · Black -
Hinge Brick 1 x 2 Base3937 · ×2 · Light Bluish Gray -
Hinge Brick 1 x 2 Locking with 1 Finger Horizontal End30541 · ×4 · Red -
Hinge Brick 1 x 2 Locking with 1 Finger Vertical End30364 · ×2 · Dark Bluish Gray -
Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth30365 · ×2 · Black