Baba is Y'all: Collaborative Mixed-Initiative Level Design

Megan Charity, Ahmed Khalifa, Julian Togelius

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    We present a collaborative mixed-initiative system for building levels for the puzzle game "Baba is You". Unlike previous mixed-initiative systems, Baba is Y'all is designed for collaborative asynchronous creation by multiple users over the internet. The system includes several AI-assisted features to help designers, including a level evolver and an automated player for playtesting. The level archives catalogues levels according to which mechanics are implemented and not implemented, allowing the system to ask users to design levels with specific combinations of mechanics. We describe the operation of the system and the results of small-scale informal user test, and discuss future development paths for this system as well as for collaborative mixed-initiative systems in general.

    Original languageEnglish (US)
    Title of host publicationIEEE Conference on Games, CoG 2020
    PublisherIEEE Computer Society
    Number of pages8
    ISBN (Electronic)9781728145334
    StatePublished - Aug 2020
    Event2020 IEEE Conference on Games, CoG 2020 - Virtual, Osaka, Japan
    Duration: Aug 24 2020Aug 27 2020

    Publication series

    NameIEEE Conference on Computatonal Intelligence and Games, CIG
    ISSN (Print)2325-4270
    ISSN (Electronic)2325-4289


    Conference2020 IEEE Conference on Games, CoG 2020
    CityVirtual, Osaka


    • Evolutionary Computation
    • Level Generation
    • Mixed-Inititive
    • PCG
    • Quality Diversity

    ASJC Scopus subject areas

    • Artificial Intelligence
    • Computer Graphics and Computer-Aided Design
    • Computer Vision and Pattern Recognition
    • Human-Computer Interaction
    • Software


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