How many pieces does the LEGO ETX Alien Mothership Assault (7691-1) have?

The LEGO ETX Alien Mothership Assault set (7691-1) contains 434 pieces. It was released in 2007 as part of the LEGO Space theme.

How can I find missing parts for LEGO set 7691-1?

On BrickMissing you can check which parts from the LEGO ETX Alien Mothership Assault (7691-1) you already own. Add your LEGO collection and we'll show exactly which of the 434 pieces you're missing and which you already have.

Can I build the LEGO ETX Alien Mothership Assault with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 434 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO ETX Alien Mothership Assault from?

The LEGO ETX Alien Mothership Assault (7691-1) belongs to the LEGO Space theme. You can browse all Space sets on BrickMissing to find more sets from this theme.

ETX Alien Mothership Assault

7691-1 Space 2007 434 parts 4.9% catalog rarity Intermediate

The LEGO Mars Mission ETX Alien Mothership Assault (7691-1) details the fierce struggle for energy crystals on Mars. The massive ETX Alien Mothership, a versatile 4-in-1 strike ship, features weaponry including a firing missile launcher and deploys three attack vehicles for its objective. Countering this alien threat is the Mars Mission defense station, equipped with an air pump system that launches four foam missiles. The set includes two astronaut minifigures and five glow-in-the-dark alien minifigures, creating a dynamic confrontation. Astronauts operate the defense station's drill, moving it back and forth to unearth more energy crystals amidst the invasion.

Parts Inventory

🧱 434 parts

Showing the first 12 rows of the parts list (434 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Trans-Orange	1×	Check price → View
Black	2×	Check price → View
Orange	2×	€0,06 View at LEGO → View
Dark Bluish Gray	5×	€0,06 View at LEGO → View
Black	1×	€0,12 View at LEGO → View
Dark Bluish Gray	2×	€0,12 View at LEGO → View
White	1×	€0,11 View at LEGO → View
Black	2×	€0,11 View at LEGO → View
Black	1×	€0,29 View at LEGO → View
Dark Bluish Gray	1×	Check price → View
Light Bluish Gray	2×	Check price → View
Black	3×	€0,07 View at LEGO → View

I already have an account

Catalog rarity

How common are the parts in ETX Alien Mothership Assault?

4.9%Moderate rarity

more commonless common

7 of 143 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

4.1%

All sets

6.7%

Least common in our catalog

Brick Round 2 x 2 x 2 Robot Body, Axle H… · White · only this set in our catalogSticker Sheet for Set 7691-1 · Unknown · only this set in our catalogAero Tube 32 x 3 x 2 1/3 · Trans-Orange · 2 sets in our catalog

How we calculate this →