LET’S BUILD TOGETHER

Moon-base hideaway

40 pieces 14 steps · Print instructions

A little before you begin

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.

See all the pieces

A LITTLE PREPARATION

Gather your pieces

Match the shapes and quantities. The pictures show our colours. Colour names in the steps refer to the pictures; keep useful contrasts, such as a light belly against a dark body.

40pieces in total

See the original colours

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01

STEP 1 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
02

STEP 2 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
03

STEP 3 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
04

STEP 4 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
05

STEP 5 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
06

STEP 6 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
07

STEP 7 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
08

STEP 8 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
09

STEP 9 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
10

STEP 10 OF 14

Put a blue square on each front pillar.

Put a blue square on each front pillar. New additions are shown in their original colours; earlier pieces are lighter.
11

STEP 11 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
12

STEP 12 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
13

STEP 13 OF 14

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. New additions are shown in their original colours; earlier pieces are lighter.
14

STEP 14 OF 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. New additions are shown in their original colours; earlier pieces are lighter.

Part and software credits.