100 Doors 4 Free is a room-escape puzzle game from developer App Games available for Android devices. Like most games of this nature, the goal is the solve the brain-bending stages by searching for hints and using your mind in order to escape from the mysterious rooms. Should you get stuck, simply follow the walkthrough below.
Level 17 / Door 17 Answer: Put the battery in the projector and tap the projector to change the picture to Japan.
Level 18 / Door 18 Answer: Take the soda cans, then take the door key behind it.
Level 19 / Door 19 Answer: Give the soda cans to the knight on the right. Then give the banana to the knight on the left. Continue through the door.
Level 20 / Door 20 Answer: Use the hammer on the wall to the right side of the door. Change the number to “3”.
Congratulations! You’ve completed levels 17 through 20 of 100 Doors 4 Free. Continue to levels 21 through 24.