Doors and Floors Level 3 Walkthrough:
Pick up the sand in the left corner.
Shake your phone until there is a small hole to the right of the door.
Tap in the hole to get a key, then use the key on the lock in the top left corner.
Tilt your phone so the screen is facing the ground and the door will fall over.
Proceed to the next Doors and Floors level!
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