AI Coding: Using Opus 5 to Create a Gaming App for The Finals (2026)

The world of competitive gaming is a fascinating one, and the pursuit of efficiency and success is a constant drive for players. In this article, we delve into the innovative approach of Ruben Circelli, a seasoned writer and software expert, who has taken on the challenge of enhancing his gaming prowess with the help of advanced AI technology. Specifically, he has developed an app called FISH, which utilizes Anthropic's Opus 5 model to assist in mastering the complex and dynamic first-person shooter game, The Finals.

The Quest for Efficiency

Circelli, known for his impatience in gaming, seeks to streamline his approach to The Finals, a game renowned for its intricate mechanics and dynamic gameplay. He introduces FISH, a study helper app designed to provide strategic guidance and enhance his understanding of the game's intricacies. The app's primary function is to generate random game states, allowing Circelli to practice decision-making and memorize essential gameplay elements.

FISH: A Strategic Companion

FISH is not a cheat tool; it operates independently of the game, offering strategic advice based on its simulations. The app provides two types of guidance: rulebook and pro strategy. Rulebook answers are grounded in the game's rules and mechanics, offering basic advice, while pro strategy answers provide more nuanced and specific recommendations.

Coding with Opus 5

Circelli's development of FISH involved coding with Opus 5, a complex reasoning model by Anthropic. He highlights the efficiency of Opus 5, allowing him to send more prompts without hitting the five-hour limit, a feature that sets it apart from ChatGPT's weekly limits. However, he also notes the challenge of managing multiple agents, which can quickly exhaust the limit, requiring careful management to avoid frustration.

Overcoming Challenges and Learning

Despite some limitations, Circelli's experience with Opus 5 has been transformative. He shares his process of extracting YouTube video transcripts from experienced players, analyzing them with Opus 5, and creating a strategy bible. This bible is then used to provide sophisticated advice on randomly generated game states, demonstrating the model's ability to distill complex information into actionable insights.

Impact on Gameplay

FISH has significantly impacted Circelli's gameplay. It has improved his understanding of game mechanics, gadgets, and strategies, enabling him to make more informed decisions. The app's drills and memorization exercises have helped him recall essential information, and its game simulations provide a comprehensive overview of various scenarios, enhancing his analytical skills.

The Bottom Line: Opus 5's Potential

Circelli concludes that Opus 5 is a formidable contender in the AI landscape, offering efficiency and intelligence comparable to OpenAI's models. While GPT-5.6 still excels in certain projects, Opus 5's capabilities are impressive, especially in generating strategic advice. He encourages readers to explore Opus 5 for their coding projects, acknowledging its potential to enhance productivity and problem-solving.

In this insightful article, Ruben Circelli showcases the power of AI in gaming, demonstrating how innovative tools can elevate a player's performance and provide a deeper understanding of complex games. His journey with FISH and Opus 5 serves as a testament to the exciting possibilities at the intersection of technology and gaming.

AI Coding: Using Opus 5 to Create a Gaming App for The Finals (2026)

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