All the answers here! The main goal in 100 Doors is to escape the room. Using all the possibilities of the device you need to open each of 100 doors and move the doors to the next Level.
Search for hidden objects, solve puzzles and use an items to do this!
Tap on the magiceye on the door. RBGR
Light 1 must be red
Light 2 must be blue
Light 3 must be green
Light 4 must be red