| title | WorldMind: Decoupled Game World Model for State-Aware NPC Behavior |
|---|---|
| authors | Zhiyang Deng, Boran Zhang, Danze Chen, Yeying Jin |
| date | 2026-08-18 |
| venue | arXiv (preprint, not peer reviewed) |
| id | arXiv:2608.21439 |
| upvotes | 15 (Hugging Face Daily Papers, 2026-11-01) |
| links | abs pdf hf code |
| primer | World models |
| abstract | Game world models have recently demonstrated promising capabilities in generating visually coherent and action-controllable gameplay videos. However, non-player character (NPC) behavior in existing models is either implicitly entangled with video generation or explicitly prescribed through external control signals. Consequently, a game world model has to jointly understand the state, plan the NPC's response and render its visual outcome, limiting its ability to produce responsive and state-aware NPC behavior. The challenge lies in the lack of an explicit interface for state-grounded decision-making. To this end, we introduce WorldMind, to our knowledge the first decoupled framework for state-aware NPC behavior in game world models. WorldMind separates interactive world modeling into four layers: an Understanding Layer that constructs a compact state from generated frames; a Decision Layer that reasons over the compact state to plan the NPC's next action; a Control Layer that translates the actions into temporally aligned conditions; and a Generation Layer that synthesizes their visual outcomes. By reconnecting layers in a closed interaction loop, WorldMind grounds NPC behavior in the evolving game state. We further introduce BOSS-140K, a dataset of gameplay videos paired with rich internal game states, together with an agent that automates the collection at scale. Experiments on BOSS-140K demonstrate reliable compact state reconstruction and mechanics-grounded planning, with WorldMind preferred over the baselines in approximately 70% of pairwise comparisons for its more tactically appropriate and coherent NPC behavior. Project page: https://teawhite.cn/worldmind_projectpage/ |
cite
@misc{deng2026worldmind,
title={WorldMind: Decoupled Game World Model for State-Aware NPC Behavior},
author={Zhiyang Deng and Boran Zhang and Danze Chen and Yeying Jin},
year={2026},
eprint={2608.21439},
archivePrefix={arXiv},
url={https://arxiv.org/abs/2608.21439}
}