Non-player characters (NPC)

A non-player character, or non-playable character, is any character in a game that is not controlled by a player.

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A non-player character, or non-playable character, is any character in a game that is not controlled by a player.

These characters can range from simple background figures to complex entities with their own behaviors and interactions. They play crucial roles in shaping the gaming environment, influencing player decisions, and driving the narrative of the game. In this article, we will delve into the intricacies of non-player characters, their role in video games, and their relevance to cybersecurity.

Understanding non-player characters

Non-player characters, as the name suggests, are characters within a game that are not controlled by a human player. Instead, they are controlled by the game's AI, following pre-set patterns or scripts. These characters can be as simple as a shopkeeper in a role-playing game (RPG) or as complex as a rival character with its own unique behaviors and interactions.

Non-player characters serve various functions within a game. They can act as guides, providing players with hints or directions. They can be adversaries, challenging the player's skills and strategies. They can also be integral to the game's narrative, driving the plot forward through their actions and interactions. Understanding the role and function of NPCs can enhance a player's gaming experience and provide insights into the game's design and mechanics.

Types of non-player characters

Non-player characters can be categorized into various types based on their functions and behaviors. Some common types include quest givers, who provide players with tasks to complete; vendors, who sell items or services; and enemies, who pose challenges to the player.

Other types of NPCs include allies, who assist the player in their tasks; bystanders, who populate the game world but do not interact with the player; and story characters, who play significant roles in the game's narrative. Each type of NPC contributes to the game's overall complexity and immersion, creating a dynamic and interactive environment for the player.

Designing non-player characters

The design of non-player characters involves a combination of art, programming, and storytelling. Designers must create visually appealing characters, program their behaviors and interactions, and weave them into the game's narrative. This process requires a deep understanding of game mechanics, player psychology, and narrative techniques.

Designing NPCs also involves considering the player's perspective. How will the player interact with this character? What emotions should this character evoke in the player? How will this character contribute to the player's overall gaming experience? These are some of the questions that designers must consider when creating non-player characters.

Non-player characters and cybersecurity

At first glance, non-player characters and cybersecurity may seem unrelated. However, with the increasing prevalence of online gaming, the intersection between these two fields is becoming more apparent. NPCs can be exploited by malicious actors to disrupt the gaming environment, steal personal information, or spread malware.

For instance, hackers can manipulate NPCs to perform actions that they are not supposed to, such as attacking players without provocation or distributing items that they should not have. This can disrupt the game's balance, ruin the player's experience, and potentially lead to financial loss for the game's developers.

Exploiting non-player characters

One common method of exploiting non-player characters is through 'botting'. This involves using automated programs to control NPCs, allowing the hacker to perform tasks at a much faster rate than humanly possible. These tasks can include farming for resources, completing quests, or fighting enemies.

Botting can lead to a variety of negative consequences. It can disrupt the game's economy by flooding the market with resources, devaluing the efforts of legitimate players. It can also give the hacker an unfair advantage, undermining the competitive balance of the game. Furthermore, it can be used to spread malware, as the bots can be programmed to send malicious links or files to other players.

Protecting non-player characters

Protecting non-player characters from exploitation is a complex task that requires a multi-faceted approach. One method is through the use of advanced AI algorithms that can detect abnormal behaviors. For instance, if an NPC is performing tasks at a rate that is humanly impossible, the AI can flag this as suspicious and take appropriate action.

Another method is through the use of encryption and secure coding practices. This can prevent hackers from accessing the game's code and manipulating the NPCs. Additionally, educating players about the risks of botting and encouraging them to report suspicious activities can also help in protecting NPCs from exploitation.


In conclusion, non-player characters are a fundamental element of video games, shaping the gaming environment and driving the narrative. Understanding the concept of NPCs can provide unique insights into the dynamics of online interactions and potential security vulnerabilities. As the intersection between gaming and cybersecurity continues to grow, protecting NPCs from exploitation will become increasingly important.

Through a combination of advanced AI algorithms, secure coding practices, and player education, we can ensure that non-player characters continue to enhance our gaming experiences, rather than becoming tools for malicious activities. As we continue to explore the digital frontier, let us remember that even the smallest characters can play the biggest roles.

Author Sofie Meyer

About the author

Sofie Meyer is a copywriter and phishing aficionado here at Moxso. She has a master´s degree in Danish and a great interest in cybercrime, which resulted in a master thesis project on phishing.

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