Brainsnag Level 12 answer: Marble Run
The level says: “Get the marble into the hole”
Hints first (no spoilers)
Hint 1Marbles roll downhill.
Hint 2What if the whole phone was the hill?
Hint 3Tilt your phone to the right (or drag the board sideways on a computer). The marble rolls into the hole.
Show the full solution
Tilt the device to roll the marble across the board and into the hole. Without motion sensors, drag the board itself to the right and hold: that tilts the table and the marble rolls.