Step 1 of 16
Add: 3 × blue 2 × 2 brick

Set out three blue square bricks: two at the back and one centred at the front. Leave four clear columns between the back pair and four rows before the front foot.
See the model
A broad yellow saucer rests on three feet. Lift its blue lid and let the Moon alien ride in the open cockpit, antennae pointing towards the stars.

Match the shape, size and colour to the parts pictures. A stud is a round bump on top. Count rows and columns from one edge.
New pieces keep their full colour. Earlier pieces are lighter. Keep the front of the model facing you unless a step says to turn it.
Gather all the pieces first, then take each step at your own pace. Help your child press pieces together and lift removable parts gently.
The lid lifts off as one piece; it does not hinge. Leave it off while the alien is aboard.
The Moon alien is a separate build with its own guide and inventory. Its antennae stand above the cockpit.
Move the craft by its lower body. The three feet are fixed.
The Moon alien is a separate 16-piece build. Its complete guide and inventory are included in this PDF and offline download.
Build the Moon alienGather pieces
Colours show the pictured version. Brown represents Reddish Brown. Match shapes and quantities first; other colour choices have not been checked for this edition.










Total: 42 pieces
Build
New pieces are in colour. Earlier pieces are lighter.
Add: 3 × blue 2 × 2 brick

Set out three blue square bricks: two at the back and one centred at the front. Leave four clear columns between the back pair and four rows before the front foot.
Add: 2 × white 4 × 8 plate

Lay two white 4 × 8 plates side by side across the feet. The plates meet down the middle.
Add: 2 × blue 2 × 4 brick

Put two blue 2 × 4 bricks side by side in the middle of the floor, running from back to front. Leave two rows or columns clear around all four sides. This raised seat keeps the alien’s face above the cockpit rim.
Add: 1 × yellow 8 × 4 semicircular plate

Attach a yellow semicircular plate beyond the back edge. Its straight edge faces forwards and its inner two rows overlap the floor.
Add: 1 × yellow 8 × 4 semicircular plate

Add the matching yellow semicircle at the front, with its straight edge facing back. Again, overlap the floor by two rows.
Add: 2 × yellow 8 × 4 semicircular plate

Add yellow semicircles at the left and right. Their straight edges face the middle; overlap each side of the floor by two columns.
Add: 2 × yellow 2 × 4 plate

Join the rim layers with yellow 2 × 4 plates across the middle of the back and front rims. These fill the gaps between the side semicircles.
Add: 4 × blue 1 × 2 double-height wall brick

Build the back wall across the yellow rim with four blue narrow double-height wall bricks. Leave one row behind the wall.
Add: 4 × blue 1 × 2 double-height wall brick

Add two blue wall bricks down each side, leaving the six-column-wide centre open.
Add: 4 × blue 1 × 2 double-height wall brick

Finish the front wall with four more blue wall bricks across the rim.
Add: 3 × white 2 × 2 sloping brick

Put three white slopes along the back wall, centred left to right. Their high edges face towards the middle of the cockpit.
Add: 6 × white 2 × 2 sloping brick

Put three white slopes along each side. Their high edges face inwards; one column projects outside each blue side wall.
Add: 3 × white 2 × 2 sloping brick

Finish the sloping cockpit with three white slopes at the front, high edges facing back towards the opening.
Add: 3 × blue 2 × 8 plate

Close the empty cockpit with three blue 2 × 8 plates across the opening, side by side. Their edges rest on the high edges of the slopes. This lid comes off when the alien rides aboard.
Add: 1 × blue 4 × 4 round plate

Join the cover plates with a blue round plate in the middle.
Add: 1 × yellow 2 × 2 brick

Finish with a yellow square brick in the centre as a low cockpit beacon.
Ready to play

Geometry: LDraw Parts Library. Part sources · Model and inventory · Render record
Revision a0491878891d0cd85f76587957d566ff28a96923656de4dd8de245a4e6ac1c4d
These new revisions have digital checks. They do not carry a new physical-test claim.