What Are Virtual Pets? History, Science, and Why Adults Still Love Them

A virtual pet is a digital creature that responds to care and attention — growing, evolving, or declining based on how consistently you interact with it. The concept has existed since 1996, but a new generation of virtual pets has moved well beyond nostalgia into tools for stress relief, companionship, and relationship health. Apps like Nuzzle have taken this further, building shared creatures that reflect the state of a couple’s relationship in real time.

What does “virtual pet” mean?

The term combines two ideas: virtual (existing in digital form, without physical substance) and pet (a creature kept for companionship and care). A virtual pet simulates the essential dynamic of caring for an animal — the creature has needs, it responds to attention, and it changes over time based on how well those needs are met.

What separates a virtual pet from a game character is the persistence of care. You’re not controlling a character through a story; you’re tending to a creature that exists independently of any narrative. It’s there when you open the app. It’s in whatever state reflects what you’ve done since you last checked in.

Where did virtual pets come from?

Virtual pets began in 1996 with the original Tamagotchi — a small egg-shaped device that introduced millions of people to the experience of genuine emotional attachment to a digital creature. What started as a children’s toy has evolved into a diverse category spanning hardware devices, web platforms, and couple-focused relationship apps.

1996 — Tamagotchi. Bandai released the original Tamagotchi in Japan in November 1996. A small egg-shaped keychain device with a pixelated screen, it displayed a creature that needed feeding, cleaning, and play multiple times a day. If you neglected it, it died. Within a year it had sold over 10 million units globally and been banned from classrooms in multiple countries.

The cultural impact of Tamagotchi wasn’t just commercial. It introduced millions of people to the experience of feeling genuine emotional attachment to a digital entity — and genuine distress when that entity died.

1997–2005 — Neopets, Digimon, and the expansion. Virtual pets diversified rapidly. Neopets brought the concept to the web with community, economy, and social systems wrapped around creature care. Digimon made virtual pets narrative and battle-capable. The Sims blurred the line between virtual pet and life simulation. Each iteration widened what a virtual creature could be.

2016–present — Mobile revival and relationship tools. Smartphone apps brought virtual pets back in a new form. The most significant development in this phase isn’t nostalgia: it’s the emergence of virtual pets as relationship tools. Apps like Nuzzle took the core mechanic — a creature that reflects care — and applied it to the care partners give each other.

How do virtual pets work?

Virtual pets track interactions over time and respond with visible changes in mood, appearance, and health. The core loop is the same across every app: the creature has states, your interactions modify those states, and consistent care produces growth — while neglect produces decline.

The mechanics vary, but most virtual pets operate on the same core loop:

1. The creature has states — hungry, happy, tired, sick, lonely — that change over time
2. Interactions modify those states — feeding, playing, resting, cleaning
3. States aggregate into health — how often and how well you respond determines whether the creature thrives or declines
4. The creature evolves — consistent positive care unlocks new forms, appearances, or abilities; neglect produces visible decline

More sophisticated virtual pets add complexity to this loop. Nuzzle, for example, tracks both partners’ check-ins and reflects the combined care in a single shared creature — so Mochi’s state at any given moment is a visual summary of how connected you’ve both been.

Why do people bond with virtual creatures?

People bond with virtual creatures because the brain’s social circuitry activates regardless of whether the creature is biological or digital. Researchers call this the CASA hypothesis — Computers Are Social Actors — and it explains why the death of a Tamagotchi felt genuinely distressing to millions of people in 1996.

The psychological mechanism is called the CASA hypothesis — Computers Are Social Actors — developed by Nass and Reeves at Stanford. Their research demonstrated that people apply social rules and emotional responses to computers and digital entities even when they consciously know the entity isn’t alive. The brain’s social circuitry activates regardless of whether the stimulus is biological.

This is why the death of a Tamagotchi felt genuinely upsetting to millions of people in 1996. It’s why players form attachments to video game characters. And it’s why a virtual pet that reflects your relationship can carry real emotional weight — because the feelings it generates aren’t pretend, even if the creature is.

How are virtual pets used in relationships today?

The most significant modern use of virtual pets is as a shared relationship tool — a creature both partners tend together, whose mood and evolution reflect the health of their connection rather than any one person’s individual effort. Nuzzle is the primary app built on this model.

The most interesting development in the virtual pet space in 2026 is the use of shared creatures as relationship tools. The underlying logic is straightforward: if a virtual pet grows through care and attention, a virtual pet shared by two partners can make the care they give each other visible.

This is the foundation of Nuzzle. Both partners interact with one creature — Mochi — through daily mood check-ins, appreciation notes, and shared phone-down sessions. Mochi’s mood, colour, and evolution stage change based on the combined quality of those interactions. When you’re both showing up, Mochi thrives. When life gets busy and connection slips, Mochi’s state is a gentle reminder — not a punishment.

The relationship mechanic is grounded in Gottman research on bids for connection — the idea that small, consistent moments of reaching toward each other are what sustain relationships over time, more than grand gestures.

Frequently asked questions

What are virtual pets?

Virtual pets are digital creatures that simulate life — they respond to care, attention, and interaction, and evolve or decline over time based on how their owner tends to them. Originally popularised by Tamagotchi in 1996, modern virtual pets range from standalone devices to mobile apps, including couple-focused tools where a shared creature reflects the health of a relationship.

What is the meaning of virtual pet?

A virtual pet is a simulated creature that exists in a digital environment and requires ongoing care from its owner. The interaction is one-sided in a technical sense, but the emotional experience of caring for something that responds to you is psychologically real — the brain’s caregiving and attachment systems don’t fully distinguish between digital and biological creatures.

Are virtual pets good for you?

Research suggests virtual pet care can reduce stress, create grounding routine, and generate genuine feelings of companionship. For couples specifically, shared virtual pets built around relationship science can support daily connection habits — the small, repeated moments of positive interaction that Gottman research identifies as the strongest predictor of long-term relationship satisfaction.

What happened to Tamagotchi?

Bandai has continued releasing Tamagotchi devices through multiple generations. The most current is the Tamagotchi Uni, a colour-touchscreen device with Wi-Fi connectivity released in 2023. The brand never fully went away — it maintained a dedicated collector community and relaunched commercially to a new generation of adults who grew up with the original.

Virtual pets have always been about something more than the creature. They’re about what it means to care for something that can’t speak for itself — and watching it respond to that care over time. That loop is as compelling now as it was in 1996. Maybe more, because now we know what it’s actually doing in our brains.

If you’re deciding which app to use, best virtual pet apps for adults covers the current options for solo use, and best virtual pet app for couples covers the couple-specific category. For getting started with one, how to use a virtual pet app covers the daily routine.