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Moon-base hideaway

40 pieces · 14 steps

A tall blue and white moon base has a wide front entrance, raised side windows and a roof that lifts away. There is room inside for the Moon alien and its antennae.

Moon-base hideaway

Before you build

Find the right shape

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.

Follow the pictures

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.

Build and play together

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 roof lifts off as one connected piece. The side windows and front entrance stay open.

The Moon alien and sample station are separate builds with their own parts lists.

Use the removable roof to place the alien inside. Carry the building by the floor.

Bring a companion

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 alien

Gather pieces

Everything you need

Colours show the pictured version. Brown represents Reddish Brown. Match shapes and quantities first; other colour choices have not been checked for this edition.

Shape-only checklist
  • 4 × 4 × 8 plate
  • 2 × 2 × 4 double-curved brick
  • 1 × 2 × 6 brick
  • 2 × 2 × 8 plate
  • 4 × 2 × 2 brick
  • 2 × 4 × 2 tall window frame
  • 12 × 2 × 4 double-height brick
  • 12 × 2 × 2 double-height brick
  • 1 × 4 × 6 plate

Total: 40 pieces

Build

One step at a time

New pieces are in colour. Earlier pieces are lighter.

Step 1 of 14

Add: 2 × white 4 × 8 plate; 1 × white 2 × 8 plate

Step 1: Lay two white 4 × 8 plates with a white 2 × 8 plate between them. Line up their back and front edges to make a floor ten columns wide and eight rows deep.

Lay two white 4 × 8 plates with a white 2 × 8 plate between them. Line up their back and front edges to make a floor ten columns wide and eight rows deep.

Step 2 of 14

Add: 2 × white 2 × 4 double-height brick; 1 × white 2 × 2 double-height brick

Step 2: Build across the back two rows with white double-height bricks: a 2 × 4, a square, then another 2 × 4. Line up with the floor edges.

Build across the back two rows with white double-height bricks: a 2 × 4, a square, then another 2 × 4. Line up with the floor edges.

Step 3 of 14

Add: 2 × white 2 × 4 double-height brick; 1 × white 2 × 2 double-height brick

Step 3: Add another row of white double-height bricks across the back: a 2 × 4, a square, then a 2 × 4.

Add another row of white double-height bricks across the back: a 2 × 4, a square, then a 2 × 4.

Step 4 of 14

Add: 2 × blue 2 × 2 brick; 1 × blue 2 × 6 brick

Step 4: Join the back wall with a blue 2 × 6 brick across the middle and a blue square at each end. The long brick crosses both joins in the floor.

Join the back wall with a blue 2 × 6 brick across the middle and a blue square at each end. The long brick crosses both joins in the floor.

Step 5 of 14

Add: 2 × white 2 × 4 double-height brick; 1 × white 2 × 2 double-height brick

Step 5: Repeat that white row once more to reach the top of the back wall.

Repeat that white row once more to reach the top of the back wall.

Step 6 of 14

Add: 2 × white 2 × 4 double-height brick; 1 × white 2 × 2 double-height brick

Step 6: Finish the back wall with one more row of the same white double-height bricks.

Finish the back wall with one more row of the same white double-height bricks.

Step 7 of 14

Add: 4 × white 2 × 4 double-height brick

Step 7: On each side, stack two white double-height 2 × 4 bricks, running from the back wall towards the front. Keep them inside the floor edges, over rows three to six.

On each side, stack two white double-height 2 × 4 bricks, running from the back wall towards the front. Keep them inside the floor edges, over rows three to six.

Step 8 of 14

Add: 2 × white 4 × 2 tall window frame

Step 8: Put a white tall window frame on each side support. Each projects one column outside the floor; its four-row length lines up with the support below.

Put a white tall window frame on each side support. Each projects one column outside the floor; its four-row length lines up with the support below.

Step 9 of 14

Add: 4 × white 2 × 2 double-height brick

Step 9: In each front corner, stack two white double-height squares. Leave the six middle columns clear for the entrance.

In each front corner, stack two white double-height squares. Leave the six middle columns clear for the entrance.

Step 10 of 14

Add: 2 × blue 2 × 2 brick

Step 10: Put a blue square on each front pillar.

Put a blue square on each front pillar.

Step 11 of 14

Add: 4 × white 2 × 2 double-height brick

Step 11: Add two more white double-height squares above each blue square. Their tops line up with the back wall and windows.

Add two more white double-height squares above each blue square. Their tops line up with the back wall and windows.

Step 12 of 14

Add: 2 × white 4 × 8 plate; 1 × white 2 × 8 plate

Step 12: Lay two white 4 × 8 plates and a white 2 × 8 plate across the walls, in the same arrangement as the floor.

Lay two white 4 × 8 plates and a white 2 × 8 plate across the walls, in the same arrangement as the floor.

Step 13 of 14

Add: 1 × white 4 × 6 plate

Step 13: Join all three roof plates with a white 4 × 6 plate across the middle. Leave two columns clear at each side and two rows at the back and front.

Join all three roof plates with a white 4 × 6 plate across the middle. Leave two columns clear at each side and two rows at the back and front.

Step 14 of 14

Add: 2 × white 2 × 4 double-curved brick

Step 14: Put two white double-curved bricks side by side in the middle of the roof plate, running from back to front.

Put two white double-curved bricks side by side in the middle of the roof plate, running from back to front.

Ready to play

Make a little story

Lift the roof to place the Moon alien inside or take it out. The roof can close above its antennae. The alien is a separate build with its own guide and parts list.
Lift the roof to place the Moon alien inside or take it out. The roof can close above its antennae. The alien is a separate build with its own guide and parts list.
  1. Lift the roof and help the Moon alien settle into its moon base.
  2. Draw a path from the base to the sample station and plan an expedition.
  3. Invent a bedtime story about what the alien saw outside its window.
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Sources and credits

Geometry: LDraw Parts Library. Part sources · Model and inventory · Render record

Revision 8f48b3eeb2b5fde5150928be33bbcd7bbaa7b985af843a4d4375ccad9356df1c

Part and colour evidence.

These new revisions have digital checks. They do not carry a new physical-test claim.