AI Research 77% 1 min readJul 7, 2026, 7:59 AM

MIRA: Multiplayer Interactive World Models trained on Rocket League [R]

30-second summary

Researchers trained MIRA, a 5-billion-parameter multiplayer interactive world model, on 10,000 hours of synthetic Rocket League gameplay and released a playable demo.

Key takeaways
  • MIRA is a 5B-parameter multiplayer interactive world model trained on 10,000 hours of synthetic Rocket League data.
  • The model runs four-player simulations at 20 fps on a single B200 GPU and includes a playable demo and open dataset.
  • Researchers from General Intuition, Kyutai, and Epic Games collaborated on the project.
  • The release aims to advance multi-agent AI research with potential applications in robotics and autonomous systems.
Full story

A team from General Intuition, Kyutai, and Epic Games has unveiled MIRA, a 5-billion-parameter multiplayer interactive world model trained on 10,000 hours of synthetic Rocket League gameplay. The model simulates four-player interactions in real time, running at 20 frames per second on a single NVIDIA B200 GPU. To foster further research, the team released a playable online demo, a 1,000-hour dataset of four-player gameplay, and an in-depth technical report detailing the architecture and training process. This marks one of the first demonstrations of large-scale, real-time multi-agent world models in a competitive gaming environment, offering a new benchmark for interactive AI systems.

The release highlights the potential of synthetic data for training complex multi-agent models, as Rocket League’s physics-based gameplay provides a controlled yet dynamic environment. By open-sourcing the dataset and demo, the researchers aim to accelerate progress in multiplayer AI, robotics, and autonomous systems where coordinated decision-making is critical. The technical report also explores how such models could scale to more complex scenarios beyond gaming, including real-world simulations and collaborative robotics.

Source: MIRA: Multiplayer Interactive World Models trained on Rocket League [R]. Read the full piece at the source.

Why this matters
Developers

Provides a new benchmark for multi-agent world models with open-source tools and datasets.

Businesses

Demonstrates scalable AI training on synthetic data, relevant for simulation and automation industries.

Investors

Highlights growth in multi-agent AI systems with real-time interactive capabilities.

Students

Offers a practical case study in training large-scale world models for competitive environments.

Glossary
World Model
An AI system that simulates and predicts the dynamics of an environment, enabling agents to plan and act within it.
B200 GPU
NVIDIA's next-generation GPU designed for high-performance AI and simulation workloads.
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