Brain Test Level 138: How to build a tower?
Brain Test Level 138
Screenshots

Quick Answer
Stack the blocks on top of each other: dark grey on the bottom, light grey in the middle, and brown on top.
Skills Tested
Step-by-Step Solution
- 1) Take the dark grey block and place it at the bottom as the base.
- 2) Place the light grey block on top of the dark grey block.
- 3) Put the brown block on top of the light grey block to finish the tower.
- 4) Release the blocks so the complete tower stands and the level is solved.
Hint
Reveal a hint
Choose the order that makes the tower stable, with the block that fits best at the bottom.
Why It Works
Stacking the blocks in the right order, dark grey at the base with light grey then brown above it, creates a tower that stays balanced. Placing them in that exact sequence is the goal the level asks for, so following the order is what finishes it.
Frequently asked questions
How do I solve Brain Test level 138?
Stack the blocks as dark grey on the bottom, light grey in the middle, and brown on top to build a stable tower.
What is the answer to Brain Test level 138?
Build the tower in the order dark grey, then light grey, then brown, from bottom to top.
How do I build a tower in Brain Test level 138?
Place the dark grey block first as the base, put the light grey block over it, and end with the brown block on top.
What is the trick in Brain Test level 138?
You can put the blocks in any order, but only the dark grey, light grey, brown sequence makes a tower that stands.
Which color goes at the bottom in Brain Test level 138?
The dark grey block goes at the bottom as the base of the tower.
Is there a video walkthrough for Brain Test level 138?
Yes, the embedded video on this page shows the blocks being stacked in the correct dark grey, light grey, brown order.
Does the order of blocks matter in Brain Test level 138?
Yes, stacking them in the wrong order will not build a standing tower, so use the dark grey, light grey, brown sequence.