#simulation

Researchers from General Intuition, Kyutai, and Epic Games released MIRA, a 5B parameter interactive world model trained on 10k hours of synthetic Rocket League data, enabling real-time 4-player gameplay at 20 FPS on a single B200 GPU. MIRA demonstrates the feasibility of large-scale world models for multiplayer, physically complex environments, potentially accelerating research in game AI, simulation, and reinforcement learning by providing a playable demo and open-source tools. The model uses a latent diffusion architecture to generate video frames conditioned on all four players' actions, and the team released a 1,000-hour dataset of 4-player gameplay, a technical report, and a playable online demo.