No matter what game you play, if you can’t defend your base, you are out. In this game, your base is your factory. To achieve more, you first have to protect what you have. A castle is as strong as its weakest part. Even if your castle has the strongest walls ever made by mankind; you won’t be able to defend it if the enemy enters inside by just walking in from the front gate. We have your solution. Think of a door which is robust, enduring and stylish. A kind of door that stays strong like a gladiator and moves quick as a Ninja warrior. That’s the kind of gatekeeper that every king needs to keep their castle safe. That’s Lucid External Door.