This repository hosts imagined interaction data generated by world models across different environments, tasks, and data sources. The repository contains the RoboTwin2.0 and RealWorld subdatasets. Storage formats, field definitions, and state and action semantics are documented separately for each subdataset. The directory structure, field definitions, array shapes, and reading examples below apply to the data under RoboTwin2.0/. The RoboTwin2.0 subdataset contains imagined interaction segments generated by a world model for 50 RoboTwin 2.0 tasks. Data are organized by task. Each HDF5 file stores one fixed-length chunk: 21 observation frames, 20 action steps, and the corresponding rewards…