The era in which AI rewrites game rules in real time has arrived. At "Tokyo Game Jam 2025 Spring" held in April 4, innovative games that make full use of AI were introduced. In this article, we will introduce the potential of AI in game development in an easy-to-understand way for junior and senior high school students, focusing on the winning game "Big Brother". We will provide an easy-to-understand explanation of how to utilize cutting-edge technology for future game creators.
What is the game development festival "Tokyo Game Jam 2025 Spring"?
Tokyo Game Jam is an event where games are developed in a short period of time using AI technology. This time, it was organized by Alibaba Cloud and MeltingHack, and about 80 participants were divided into 12 teams and completed their games in three days. The total prize money was 3 million yen, and both professionals and students participated. The venue was filled with excitement.
AI creates the rules! The much talked about winning game "Big Brother"
Game content and technological innovation
"Big Brother" is a card game in which AI generates rules using Python scripts. Players must deduce the "invisible rules" from the actions of others and aim to win. Each game develops differently, creating new strategies.
A dystopian worldview
The game is inspired by George Orwell's novel "1984" and the card game "Mao." The absurd rules generated by the AI enhance the dystopian atmosphere of a surveillance society and increase the immersion.
https://sushibytes.itch.io/big-brother
There are more! AI-based games in the spotlight
- Prompt Vision: A quiz-style game in which you guess keywords from AI-generated images.
- Cosmic Diner: A horror cooking game in which you serve aliens dishes that are evaluated by AI.
- The Normal Dating Game: A love simulation game in which AI automatically generates personalities and conversations. The theme is suspicion.
These works also utilize a wide range of technologies, including AI image generation, dialogue creation, and balance adjustment.
What is Alibaba Cloud's AI technology?
Using the Qwen series
Alibaba Cloud's high-performance AI "Qwen" series excels in natural language processing and code generation. In "Big Brother", "Qwen2.5-Coder" is used to generate Python code, changing the rules of the game.
Model Studio and PAI
- Model Studio: A development environment that allows you to customize AI without coding.
- PAI (Platform for AI): An AI development platform that supports everything from data preparation to model operation.
Using these, even beginners can easily develop AI apps and games.

Interview with the winning team, SushiBytes!
SushiBytes is a multinational amateur team of five people, most of whom were participating in a game jam for the first time.
Q: Why did you win? "I think they were recognized for using AI at the core of the game and creating a new way to play."
Q: How does Alibaba Cloud work? "Qwen2.5-Coder made rule generation possible. The API was simple to use."
Q: For those about to take on the challenge "The important thing is to believe in your teammates and have the courage to take a step forward. Don't be afraid of failure, take on the challenge."
Summary
- AI can automatically generate game rules, conversations, and characters
- High-performance AI "Qwen" series increases development freedom
- Beginners can try their hand at AI game development with Model Studio and PAI
- Even amateurs can achieve great results with their imagination and skills.
- Generative AI is used in a variety of areas in game production
If you are interested in creating games using AI, try using free AI tools first. Just creating characters with image generation AI or thinking up a story with ChatGPT will stimulate your creativity. Just thinking about what kind of rules you would create might give you an idea for your next game. AI is the key to opening the door to new business and entertainment. Why not use your ideas and technology to create a game that will excite the world?