100 Doors Challenge 2 is an interesting android game where you will open a locked door. In this game you will find yourself locked in a mysterious castle, where each room does not look like each other. Open all doors, use for all your logical and mental skills and solve difficult puzzles. Each new level of the game has many new puzzles and puzzles that won't be easy to solve. Look for the key you need, open the complex mechanism and select the correct code. Play this game and find all the items you need to open the door. Use tips in difficult situations and go through mini-games.