Tomogachi is a simple virtual pet game built as a Chrome extension inspired by the classic 90's toy. Designed to be a light companion game that can run quietly in the background while you work or study, take care of your tiny browser companion by feeding it, playing with it, cleaning it, letting it sleep, and helping it grow from an egg into an adult. Instead of demanding constant attention, it uses small timed interactions making it a good fit for short breaks between tasks, giving the player a quick moment of focus reset without becoming a major distraction. Because it lives inside the browser as a Chrome extension, Tomogachi stays easily accessible during everyday computer use while still remaining small, simple, and unobtrusive.

Chrome Web Store link: Coming soon

Tomogachi is designed to be a light companion game that can run quietly in the background while you work or study. Instead of demanding constant attention, it uses small timed interactions: feeding, cleaning, playing, or letting your pet sleep when it needs care. This makes it a good fit for short breaks between tasks, giving the player a quick moment of focus reset without becoming a major distraction. Because it lives inside the browser as a Chrome extension, Tomogachi stays easily accessible during everyday computer use while still remaining small, simple, and unobtrusive.

• Egg, baby, adult, sleep, and death/departure stages
• Name your Tomogachi during the egg stage
• Egg hatching timer
• Petting the egg makes it hatch faster
• Hunger, happiness, energy, cleanliness, and hidden health systems
• Healthy and tasty food options
• Pong minigame
• Wake-up bell button
• Extension badge notifications when the Tomogachi needs attention
• Pixel-art-inspired UI and background

The game starts with an egg. During this stage, the player can name the Tomogachi and pet the egg to make it hatch faster. After hatching, the Tomogachi enters the baby stage. This stage requires more frequent care. The player must feed, clean, play, and manage sleep. After enough time, the Tomogachi evolves into the adult stage. Adult Tomogachis need care less often, but neglect can still affect their hidden health. If the player ignores the Tomogachi for too long, its hidden health decreases.

1. Download or clone this repository.
2. Open Google Chrome.
3. Go to:

chrome://extensions

4. Turn on Developer mode.
5. Click Load unpacked.
6. Select the project folder.
7. Click the extension icon to open Tomogachi.

• HTML
• CSS
• JavaScript
• Chrome Extensions Manifest V3
• Chrome Storage API
• Chrome Alarms API
• Chrome Action Badge API

This project is still in development. The debug time-skip button is currently included for testing and should be removed or hidden before release.

• More pet evolutions
• Multiple possible adult forms
• More minigames
• Sound effects
• Save slots
• Chrome Web Store release

Created by Luis Fim.

This project does not currently have a license.