inZOI Smart Zoi

inZOI Smart Zoi represents the most ambitious deployment of on-device AI NPC autonomy in a consumer life simulation game. Powered by the Mistral NeMo Minitron 500M-parameter model running locally on NVIDIA GeForce RTX hardware — adding just 1GB of VRAM overhead — Smart Zoi characters are not waiting for player interaction to determine what they do next. They have personality types (considerate, ambitious, and others), life goals derived from those personalities, and daily schedules that they actively recalculate based on accumulated experiences over time. The critical distinction from traditional life simulation AI — and from every previous Sims-style NPC system — is that Smart Zoi NPCs accumulate experience in a way that changes their decision-making. A considerate Zoi who has had positive social interactions will pursue different schedule priorities than one who has experienced rejection. The AI layer does not merely execute a routine; it revises its goals based on what it has lived through. Launched in Early Access on March 28, 2025, inZOI was the first consumer life simulation game to ship this capability. The on-device inference model is crucial to the experience. Because the AI runs locally on the player's GPU, the Zoi characters respond in real time without API latency, and there are no cloud service dependencies that could degrade or disappear. Krafton's choice of a 500M-parameter model — far smaller than the 8B models used by PUBG Ally — reflects careful model sizing: the Smart Zoi task (goal-driven behavioral autonomy in a life simulation) requires less reasoning depth than tactical combat AI but demands extremely high throughput across potentially many simultaneous NPC agents in the world. For the life simulation genre, Smart Zoi is a generational leap: NPCs that genuinely live their own lives.