Dusttrust

Dusttrust is a fan-made Undertale AU brought to Chrome as a playable extension. It centers on an intense, multi-phase boss fight against Sans set in the DUSTTRUST alternate universe. The extension includes the full three-phase encounter, faithful AU storytelling, and a challenging gameplay loop designed for fans of tough boss battles.

Created by QK, ported to Android by Hadrian, and released by KYwoo, Dusttrust retells a dark AU story where Papyrus descends into madness and Sans is forced into fatal choices. River Person’s intervention and themes of time, space, and endless genocides shape a grim narrative that drives the combat. Ideal for Undertale fans and AU enthusiasts, this extension offers a compact, dramatic experience with nostalgic pixel-style mechanics and a focus on skillful dodging and pattern recognition.