Little Builder: ages 5–7, voice-led play. Young Explorer: ages 8–12, reading and reasoning. Deep Explorer: ages 13+ and adults, technical concepts. These are design guides, not certified age ratings. Choose by reading confidence and interest; younger children benefit from a grown-up nearby.

Choose EN + ES for Spanish on screen and English followed by Spanish in the voice guide. English letter-building words stay visible so children can connect words across languages. No translation request leaves this device.

Bilingual play uses the prepared English and Spanish guides. Device voice selection is available in English-only mode. If a bilingual clip cannot load, read the caption or press the speaker to retry.

No account, name, ads, analytics, forms, chat, uploads, microphone, recording, or child profile. Progress stays in this browser only. The hosting provider may process essential requests and set a short-lived anti-abuse cookie.

• Build two block towers. Which is taller?
• Build a bridge between two pretend buildings.
• Make a safe house with one strong wall.

Designed for short sessions. The child can stop anytime and continue here later.

Optional word bridges, counting towers, shape houses and pretend safety stories extend the seven city missions. Practise pausing and asking a trusted parent, carer or teacher before clicking a surprise or sharing private information. If something feels wrong, the child can tell an adult and is not in trouble. This practice supports conversation; it does not replace adult supervision.

Playroom badges and older-mode experiment badges stay in this browser. No personal answers or activity history are saved.

Missions, earned pieces, preferences, and the snapped city are saved only on this device.

The city is fictional and synthetic. It never connects to live security systems, customer data, or employer systems.