Brain Test 3 Level 225
There is an intruder! Wake them up
Find a way to activate the fire alarm. Find a lighter in the nightstand on the right. Drag the lighter to the smoke detector and keep it there until 3 seconds.

Follow the screen sequence
Use the images as a compact replay of the solving path. The text below each frame explains what should change.

Video walkthrough
Same number in other versions
Brain Test versions can reuse the same level number with a different puzzle. If the screenshot or question does not match your game, switch to the same number in another version or use the nearby level links.
Strategy guide
- 1.Check the nightstand for the lighter first, then locate the smoke detector;
- 2.Drag and hold the lighter directly under the smoke detector until the alarm sounds;
- 3.Focus on activating the fire alarm system to solve the 'wake up' objective.
Common mistakes
- 1.Tapping repeatedly on the sleeping person instead of finding the alarm;
- 2.Dragging the lighter to the person rather than the smoke detector;
- 3.Not holding the lighter to the detector long enough for it to activate.
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