VIRTUAL CREATURE SYSTEM

Raise the signal.
Shape the Echo.

Daily care forms its identity. Training awakens its power. This first prototype keeps your companion alive between visits without punishing long absences.

Prototype 01 Care loop · Offline progress · Local save
ECHO CORE
EC–01
LOCAL
AGE 0
PERSONAL ECHO TERMINAL

ECHO CORE

A new signal is waiting to be linked.

BUILD 0.3.0 · LOCAL PROFILE
FIRST RESONANCE

Choose your Echo egg

Choose a lineage that grows from Spark Form through Hatchling, Core, Ascended, Surge, and Apex forms.

EGG 1 OF 5
Select an egg to inspect its lineage.
A new signal is listening…
UNBOUND CHOOSE AN EGG
✦
CURRENT STATECURIOUS
Your signal feels steady.
DAILY ROUTINE

Care

All signals stable
i

Care influences the permanent form your Echo develops into.

RESONANCE LAB

Training

LV 1
EXPERIENCE0 / 130 XP
SPARRING UNLOCKS AT HATCHLING FORM · DAY 1
ADVENTURE SIGNAL The Fractured Garden Map missions arrive in Prototype 02
COMPANION RECORD

Data

SAVE V7
LINEAGE MAPEvolution tree
LATEST MEMORY
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    Guide & Install Tips

    Install on iPhone or iPad

    1. Open the Echo Core URL in Safari.
    2. Tap Share (the square with an upward arrow).
    3. Scroll and choose Add to Home Screen, then tap Add.

    iPhone normally does not show an automatic install pop-up, so use Safari's Share menu.

    Install on Android

    1. Open the URL in Chrome.
    2. Tap the ⋮ menu and choose Install app or Add to Home screen.
    3. Confirm the installation.

    Install on desktop

    In Chrome or Edge, use the install icon in the address bar or the browser menu's Install Echo Core command.

    Care tips

    Meals unlock only below 50 Hunger. Treats have a 30-minute cooldown. Waste appears over time—use Clean before hygiene becomes dangerous. A full rest cycle takes eight verified hours.

    Evolution milestones

    1. Spark Form appears immediately after hatching.
    2. Hatchling Form and its first route unlock on Day 1.
    3. Core Form develops on Day 3.
    4. Ascended Form unlocks at Level 10.
    5. Surge Form unlocks at Level 20.
    6. Apex Form unlocks at Level 30.

    Care, training style, bond and mistakes decide which route is selected. Check Data → Evolution Tree to inspect every possible form.

    Weather & training

    The forest changes between day and night, and each season lasts seven pet days. Heat can raise Stress; rest or play helps. Training can succeed or fail depending on mood, energy, LUCK and Stress. Sparring unlocks from Hatchling Form onward. A failed session may leave your Echo needing a Treat.

    Protect your save

    Progress belongs to the browser or installed PWA currently in use. Export a JSON backup from Data before clearing browser data, uninstalling, or changing phones.
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    Privacy & Policy

    Last updated: 19 July 2026

    Local game data

    Echo Core does not require an account. Pet progress, settings and care history are stored locally in this browser or installed PWA.

    No personal information

    The game does not ask for a name, email address, contact list, location, camera or microphone access.

    Save responsibility

    Clearing browser data or uninstalling the PWA may remove local progress. Use Export Save to create a backup before changing device or browser.

    Hosting logs

    The website host may retain ordinary technical access logs such as IP address, browser type and request time according to the host's own policy.

    Updates

    Checking for an update only asks the browser to refresh the app files from this Echo Core website.
    LINEAGE ARCHIVE

    Evolution concept board

    100%

    Double-tap the image to switch between 100% and 200%. Drag the enlarged image to inspect each form.