Brain Test Level 113 Answer
Tapping the play button where it sits, expecting the video to begin. Tapping does nothing, because the purple play button is not a control on the laptop.
The puzzle
Start the video.
The answer
Grab the purple play button and drag it up onto the laptop screen. The video starts.
What most people try first
Tapping the play button where it sits, expecting the video to begin.
Why that is the answer
Tapping does nothing, because the purple play button is not a control on the laptop. It is a loose object lying beside it, which is why it responds to being picked up. Drag it onto the laptop screen and the video starts. The level is testing whether you can tell an interface element from a prop that merely looks like one.
If your level 113 looks different
Unico Studio shuffles level numbers between game versions and platforms, so the puzzle on your screen may carry a different number from the one here. If the question above is not the one you are looking at, the full levels 101 to 150 walkthrough lists every puzzle in this stretch by its question, which is easier to match than a number.