The timer for the Domino game does not begin until you select the associated button. Take your time to solve a hidden-object scene, leaving only one hidden object untouched. Then, start the Domino game. There is one rune for each hidden object. You will have one minute to reach just one rune, which should be easy to get in any available hidden-object scene.
Solution for Safe Code
The numbers listed on the clue indicate the direction and the number of clicks to move for the correction Safe Code.
The 1st number is R5 - Move the dial right to 5.
The 2nd number is L3 - 5 + 3 = 8 - Move the dial right to 8.
The 3rd number is R8 - 8 - 8 = 0 - Move the dialright to 0.
The 4th number is L7 - 0 + 7 = 7 Move the dial left to 7.
The 5th number is R4 - 7 - 4 = 3 Move the right to 3.