@inproceedings{songtang-etal-2025-unrealllm,
    title = "{U}nreal{LLM}: Towards Highly Controllable and Interactable 3{D} Scene Generation by {LLM}-powered Procedural Content Generation",
    author = "Tang, Song  and
      Zhao, Kaiyong  and
      Wang, Lei  and
      Li, Yuliang  and
      Liu, Xuebo  and
      Zou, Junyi  and
      Wang, Qiang  and
      Chu, Xiaowen",
    editor = "Che, Wanxiang  and
      Nabende, Joyce  and
      Shutova, Ekaterina  and
      Pilehvar, Mohammad Taher",
    booktitle = "Findings of the Association for Computational Linguistics: ACL 2025",
    month = jul,
    year = "2025",
    address = "Vienna, Austria",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/mtsummit-25-ingestion/2025.findings-acl.994/",
    doi = "10.18653/v1/2025.findings-acl.994",
    pages = "19417--19435",
    ISBN = "979-8-89176-256-5",
    abstract = "The creation of high-quality 3D scenes is essential for applications like video games and simulations, yet automating this process while retaining the benefits of Procedural Content Generation (PCG) remains challenging. In this paper, we introduce UnrealLLM, a novel multi-agent framework that connects natural language descriptions with the professional PCG system (Unreal Engine 5) to automate scene generation. UnrealLLM constructs a comprehensive knowledge base to translate text into executable PCG blueprints and a diverse asset library that guarantees high-quality scene generation. Additionally, it also introduces a text-based blueprint system with a spline-based control mechanism for geometric arrangement, enabling natural language interaction and enhancing interactivity in 3D environments using UE5{'}s advanced capabilities. Through extensive experiments, we show that UnrealLLM achieves competitive performance in technical metrics and aesthetic quality, offering unique advantages in generation scale and interactivity. This work makes a valuable contribution to automated 3D content creation, benefiting both novice users and professional designers."
}