Brain Test 4 Level 69: Doctor Worry needs a butterfly for his next experiment.
Brain Test 4 Level 69
Screenshots

Quick Answer
Drag the caterpillar to the rock to form a cocoon. Drag the sun down to make it night, then drag it back up to make it day so the butterfly hatches.
Skills Tested
Step-by-Step Solution
- 1) Drag the caterpillar onto the rock to build a cocoon.
- 2) Move the sun down to bring on night.
- 3) Move the sun back up to bring on day.
- 4) Watch the butterfly hatch from the cocoon.
Hint
Reveal a hint
A caterpillar needs time to transform, and that takes a full cycle of day and night.
Why It Works
The puzzle plays on the life cycle of a butterfly. You first make the cocoon, then advance through night and back to day so the creature can hatch out.
Frequently asked questions
How do I solve Brain Test 4 Level 69?
Drag the caterpillar to the rock to form a cocoon, then move the sun down to make night and back up to make day until the butterfly hatches.
What is the answer to Brain Test 4 Level 69?
The answer is to turn the caterpillar into a cocoon on the rock and then switch the sun between night and day so the butterfly appears.
What is the trick in Brain Test 4 Level 69?
The trick is understanding the butterfly life cycle: you must create a cocoon and then pass through both night and day before the butterfly hatches.
Why do I need to cycle day and night in Brain Test 4 Level 69?
Passing through night and back into day lets time advance enough for the cocoon to develop and the butterfly to hatch out.
Is there a video walkthrough for Brain Test 4 Level 69?
Yes. The embedded video shows the cocoon being made on the rock and the sun being moved down and up until the butterfly hatches.
How do I avoid getting stuck in Brain Test 4 Level 69?
Remember to make the cocoon first before touching the sun. Then cycle night and day fully until the butterfly finally emerges.