After the first set of platforms is passed, the player comes across another turret, and a secret explosive (small blue sprite) on the platform directly below the turret. The player has already encountered a turret, and they know what they look like and act, so it is no surprise to the player, but they are unaware about the explosive, and will have to learn what it looks like, and how to overcome it. This gives variety to the tech demo, and keeps the players on their toes, and wary of other potential threats. The platform has also been programmed to move up and down, making it hard for the player to avoid the explosive giving the tech demo a level of challenge. This would give the player a feeling of satisfaction for overcoming the obstacle, in this instance the mine.
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