100Floors level 99

STEP 1

Startup screen.

STEP 2

Make the squares which indicates number 15. In order to input 'x' and '=', press the red buttons on the ground. To input '+' and '-' in the sequence, press the volume up or volume down buttons in your device.

STEP 3

Input signs in the sequesnce from left as follow: +, x, =, x, -.

STEP 4

Escaped.