Last weekend I fell into a rabbit hole: what if game characters didn't just have scripted reactions,... Tagged with ai, gamedev, showdev, sideprojects.

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A developer built Persona World, an open-source pixel art village simulation featuring 12 AI characters with dynamic emotional states. Each character has a HEXACO personality profile (six dimensions) and uses a 9-dimensional cognitive appraisal model to compute emotional responses in VAD (Valence-Arousal-Dominance) space. Personality shapes how characters react to interactions like praise or betrayal, relationships accumulate over time, and mood shifts gradually rather than instantly. The tech stack uses React 19, Canvas 2D, TypeScript, and the molroo SDK for emotion computation. The project is open source with a live demo available, and the author invites discussion on continuous emotion models in games.

I Built a Pixel Art Village Where AI Characters Have Real Emotions

But the tavern-family is over 1000 characters, so it’s fine—it’s useful for the clawbot projection.

Cool experiment, I’ll definitely look into replicating something similar

This is where AI in games gets interesting, moving from scripted reactions to continuous emotional systems. The real value isn’t the sim itself, it’s the framework for believable, evolving behavior.