What Makes Good AI?

Mark Brown explores the elements that make AI in games truly exceptional. From intelligent behaviors and predictability to interaction with game systems and adaptability, good AI goes beyond simply hunting down and killing the player. It involves making the game feel fair, providing feedback to the player, and maintaining a consistent and engaging experience. In this article, we delve into the key aspects of what makes AI in games stand out and discuss some noteworthy examples.

When it comes to discussing good AI in games, certain examples always come up: the replica soldiers in F.E.A.R., the aliens in the Halo series, and the marines in Half-Life. These games feature enemies that actively hunt down and challenge the player, showcasing intelligent behaviors and robust health systems. However, aggressive enemies don't work for every game, and AI must align with the intended experience of the game.

Good AI should go unnoticed by the player, allowing them to cheat or manipulate the environment without feeling artificial. For example, in Uncharted, enemies start with a low chance to hit the player when they pop out of cover, giving the player an opportunity to retaliate. Similarly, in the Far Cry series, only a few enemies will shoot simultaneously, improving the player's odds of winning the fight. These subtle adjustments make the game feel fair and enhance the overall experience.

Informing players about an AI's intentions is crucial for creating engaging gameplay. This can be done through vocal clips, animation, body language, or game elements such as vision cones, light and noise sensors, and ghostly images. By providing feedback, players can understand the AI's behavior and plan their strategies accordingly.

Predictability is another key element of good AI. While unpredictability may seem desirable, a consistent AI allows players to create intentional goals and make meaningful decisions based on their understanding of the game dynamics. By knowing how AI will react in certain situations, players can develop strategies and execute plans effectively.

Good AI not only reacts to the player's actions but also interacts with the game's systems. This can include enemies picking up weapons or reacting to changes in the environment. It adds complexity to the AI characters and makes them appear smart and aware of their surroundings. Moreover, by exposing AI characters to game systems, developers provide players with unique tools and tactics to deal with the challenges presented.

The adaptability of AI to the player's behavior is a powerful tool to create engaging experiences and drive the game's pacing. In games like Metal Gear Solid V or Shadow of Mordor, the enemies' behavior changes based on the player's actions or milestones achieved. This not only prevents players from relying on repetitive strategies but also enhances the feeling of an evolving and responsive game world.

In addition to enemy AI, friendly AI also plays a significant role in game design. From invincible companions like Elizabeth in BioShock Infinite to creatures that can cooperate with the player, such as Trico in The Last Guardian, friendly AI adds depth and variety to the gameplay. They can protect the player, interact with the environment, or contribute to the game's narrative and atmosphere.

Keywords: AI behaviors, predictability, interaction with game systems, adaptability, friendly AI.

FAQ

Q1: What role does predictability play in good AI?
A: Predictability in AI allows players to create intentional goals and make meaningful decisions based on their understanding of the game dynamics. It enables players to develop strategies and execute plans effectively, enhancing their overall experience.

Q2: How does good AI interact with game systems?
A: Good AI interacts with game systems to provide players with unique tools and tactics to deal with challenges. This can include enemies picking up weapons, reacting to changes in the environment, or enabling the player to manipulate AI behavior to their advantage.

Q3: How does AI adapt to the player's behavior?
A: AI adapts to the player's behavior to create engaging experiences and drive the game's pacing. By changing behavior or introducing new abilities based on the player's actions, AI can ensure that the game remains challenging and dynamically responds to the player's choices.

Q4: What is the role of friendly AI in game design?
A: Friendly AI adds depth and variety to the gameplay. They can protect the player, interact with the environment, or contribute to the game's narrative and atmosphere. Well-designed friendly AI can enhance the player's immersion and create memorable experiences.