Brain Test 5 Level 129: He must open the door.
Brain Test 5 Level 129
Screenshots


Quick Answer
Collect the red, yellow, and green balls by dropping them, luring the mouse with cheese, and breaking the bowling ball with a hammer. Place them in the door lock. Pull the lever when the robot is directly on top of the trapdoor. Change the middle number on the screen to 2 to match the tally marks on the wall (2-2-3).
Skills Tested
Step-by-Step Solution
- 1) Gather the three colored balls and put them into the door lock.
- 2) Pull the lever exactly when the robot sits over the trapdoor.
- 3) Set the on-screen middle digit to 2 so it matches the wall marks.
Scenes
Collect the three differently colored balls by dropping them, tempting the mouse with cheese, and cracking the bowling ball open with the hammer, then put every ball in the lock.

Pull the lever the moment the robot lines up directly over the trapdoor.

Set the middle digit shown on screen to 2 so it lines up with the two-two-three tally marks drawn on the wall.

Hint
Reveal a hint
Gather the balls for the lock, time the lever for the robot, and fix the middle number on the screen.
Why It Works
The level links a collection task, a timing event, and a number correction into one build. Getting all three balls means carrying out the right actions, whether dropping them, coaxing the mouse, or cracking the bowling ball. The trapdoor depends entirely on hitting the lever at the correct instant. Settling the display to the wall tally is a straightforward matching step that wraps everything up.
Frequently asked questions
What is the answer to Brain Test 5 Level 129?
Collect the three balls, place them in the lock, pull the lever over the robot, and set the middle number to match the wall.
How do I open the door in Brain Test 5 Level 129?
Gather the red, yellow, and green balls by dropping and cracking them, then place the finished set inside the door lock.
Why do I pull the lever in Brain Test 5 Level 129?
Pull the lever at the exact moment the robot stands over the trapdoor so the weight of the machine drops it through.
What number do I set in Brain Test 5 Level 129?
Set the middle number on the screen to 2, which gives the two-two-three sequence that matches the tally marks on the wall.
Is there a video walkthrough for Brain Test 5 Level 129?
Yes, a walkthrough shows collecting the balls, timing the lever pull, and fixing the middle digit to 2.
How do I avoid getting stuck in Brain Test 5 Level 129?
Finish the ball collection before the trapdoor, time the lever carefully, and copy the two-two-three tally exactly.