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!

Level 1:

Grab the hammer on the floor.

Use it to break the bricks on the right of the door

Tap the switch to open the door

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