meet.xixi

meet.xixi is a next-gen AR fashion pet that blends companionship with style. Acting as your virtual friend and fashion guide, it evolves with you—offering personalized looks and emotion values.

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Inspiration

Meet XiXi draws inspiration from Tamagotchi, the iconic digital pet. We wanted to reimagine the classic virtual pet experience for the modern age, combining AI-driven interaction, emotional expression, and fashion-oriented customization to create a digital companion that grows, communicates, and evolves with its owner.

What it does

Meet XiXi is an AI-based virtual pet where players can:

  • Chat with their pet and experience emotional reactions.
  • Feed, dress, and care for the pet through four growth stages: Egg → Toddler → Teen → Young Adult.
  • Collect items and fashion accessories that drop randomly during interactions.
  • See dynamic animations and emotional expressions that reflect the pet’s mood.
  • Use voice input for AI conversations and receive personalized responses.

How we built it

  • Platform: Unity for iPhone (TestFlight MVP, App Store release planned).
  • UI/UX: Designed in Figma with iterative optimizations, supporting English/Japanese and six emotional expressions.
  • Backend / APIs: Shopify API integration for linking Momo merchandise and order tracking. Voice-to-text handled via Dify cloud service, with potential local processing for mobile.
  • Animation & Interaction: Frame-by-frame animations for each growth stage, including idle, eating, happy, sad, and gestures. Items drop dynamically based on interaction and stage.

Challenges we ran into

  • Integrating voice-to-text while maintaining background music on mobile.
  • Converting images into .h format for ESP32 AR hardware.
  • Supporting multi-language input and emotional animation in real-time.
  • Designing a scalable item-drop system for different growth stages without overcomplicating the MVP.
  • The AR -reality projection feature of meet.xixi proved too complex and has not been implemented.

Accomplishments that we're proud of

  • MVP successfully showcased at Hong Kong Designer Con, featuring core interactions and growth stages.
  • Implemented six emotional expressions reflecting AI interactions.
  • Launched Shopify web chatbot for merchandise linking and order tracking.
  • Built a functional vertical slice in Unity with responsive animations and interactive feedback.

What we learned

  • Iterative testing with real users is invaluable for emotional connection and interaction flow.
  • Cloud-based AI processing must be balanced with mobile performance to maintain smooth gameplay.
  • Structured animation pipelines are essential for visual consistency across growth stages.

What's next for meet.xixi

-Official App V1 release in December, integrating AR hardware for physical “Poké Ball” projection.

  • Expand voice interaction with local processing support.
  • Introduce more complex item-drop systems, interactive gifts, and fashion evolution.
  • Explore additional languages and global user support to scale Meet XiXi as an international digital companion.

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