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Consigliato

19 January 2026

Lettore di giochi Flash con emulatore Ruffle

10 February 2026

Giochi sbloccati: gioca gratuitamente online a scuola

27 February 2026

Giochi sbloccati: GN-Math, gioca gratis online

HTML

<!DOCTYPE html>
<html lang="en">
    <head>
        <base href="https://cdn.jsdelivr.net/gh/gn-math/gn-math.github.io@main/">
<link rel="icon" type="image/png" href="https://codehs.com/uploads/84799a0bb8e09668879b73acd5e7abaa">
<link rel="icon" type="image/png" sizes="32x32" href="https://codehs.com/uploads/84799a0bb8e09668879b73acd5e7abaa">
<link rel="apple-touch-icon" href="https://codehs.com/uploads/84799a0bb8e09668879b73acd5e7abaa">
    <link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@900&display=swap" rel="stylesheet">
<script>
    <script>
        window.addEventListener('beforeunload', function (event) {
            event.preventDefault();
            event.returnValue = '';
            return 'Are you sure you want to leave? Any unsaved changes will be lost.';
        });
    </script>
    <script async="" src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-5521219086088837" crossorigin="anonymous"></script>
    <script async="" src="https://www.googletagmanager.com/gtag/js?id=G-WX5VS54ZDW"></script>
    <meta name="google-adsense-account" content="ca-pub-5521219086088837">
    <script>
        window.dataLayer = window.dataLayer || [];

.spinner {
    width: 60px;
    height: 60px;
    border: 6px solid rgba(255,255,255,0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}
    
/* ---------- soft / calm palette ---------- */
:root {
    --primary-color: #111111;          /* mid grey accent */
    --text-color: #333;
    --background-color: #d9d9d9;       /* calm mid-grey background */
    --card-bg: #e5e5e5;                /* slightly lighter cards */
    --card-border: rgba(0, 0, 0, .08); /* almost invisible border */
    --shadow: 0 6px 24px rgba(0, 0, 0, .08);
    --popup-bg: #eeeeee;
}

.dark-mode {
    --primary-color: #ffff00;
    --text-color: #e0e0e0;
    --background-color: #000000;
    --card-bg: #252525;
    --card-border: rgba(255, 255, 255, .06);
    --shadow: 0 6px 24px rgba(0, 0, 0, .35);
    --popup-bg: #252525;
}

/* ---------- global soft reset ---------- */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color .4s, color .4s;
}

/* ---------- header ---------- */
header {
    background-color: var(--primary-color);
    color: #fff;
    padding: 1rem;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 10px;
}

/* ---------- search / controls ---------- */
.search-container {
    display: flex;
    gap: 10px;
    margin: .5rem 0;
}

#searchBar,
#sortOptions {
    padding: .55rem .7rem;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 16px;
    transition: border-color .25s;
}

#searchBar:focus,
#sortOptions:focus {
    outline: none;
    border-color: var(--primary-color);
}

.control-buttons button {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: .55rem 1rem;
    font-size: 16px;
    cursor: pointer;
    transition: background-color .25s;
}

.control-buttons button:hover {
    background-color: rgba(255, 255, 255, .2);
}

/* ---------- main grid ---------- */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.2rem;
}

#container,
#featuredZones {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 24px;
    margin-top: 1rem;
}

/* ---------- game cards ---------- */
.zone-item {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    transition: transform .25s, box-shadow .25s;
}

.zone-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, .12);
}

.zone-item img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-bottom: 1px solid var(--card-border);
}

.zone-item button {
    background-color: transparent;
    color: var(--text-color);
    border: none;
    padding: 12px;
    cursor: pointer;
    font-weight: 600;
    flex-grow: 1;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border-radius: 0 0 20px 20px;
}

/* ---------- zone viewer ---------- */
#zoneViewer {
    position: fixed;
    inset: 0;
    background-color: var(--background-color);
    z-index: 1000;
    display: none;
    flex-direction: column;
}

.zone-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--primary-color);
    color: #fff;
    padding: .6rem 1.2rem;
    border-radius: 0 0 16px 16px;
}

.zone-title {
    flex-grow: 1;
}

#zoneName {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

#zoneAuthor {
    font-size: .85rem;
    color: rgba(255, 255, 255, .8);
    text-decoration: none;
}

.zone-controls button {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, .4);
    color: #fff;
    padding: .45rem .8rem;
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    margin-left: 6px;
    transition: background-color .2s;
}

.zone-controls button:hover {
    background-color: rgba(255, 255, 255, .12);
}

#zoneFrame {
    flex-grow: 1;
    border: none;
    width: 90%;
    height: 90%;
    margin: 16px auto;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

/* ---------- pop-ups ---------- */
#popupOverlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, .45);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.popup {
    background-color: var(--popup-bg);
    border-radius: 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, .2);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.popup-header {
    background-color: var(--primary-color);
    color: #fff;
    padding: .9rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 24px 24px 0 0;
}

#popupTitle {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 600;
}

#popupClose {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

#popupBody {
    padding: 1.2rem;
    overflow-y: auto;
    color: var(--text-color);
}

#popupBody input[type="text"],
#popupBody input[type="file"] {
    width: 100%;
    padding: .6rem;
    margin-bottom: 1rem;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 16px;
}

#settings-button {
    display: block;
    width: 100%;
    padding: .75rem;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 16px;
    margin-bottom: 1rem;
    transition: opacity .25s;
}

#settings-button:hover {
    opacity: .85;
}

/* ---------- footer ---------- */
footer {
    background-color: var(--card-bg);
    padding: 1.2rem;
    text-align: center;
    margin-top: 2.2rem;
    border-radius: 16px 16px 0 0;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    transition: opacity .2s;
}

.footer-links a:hover {
    opacity: .75;
    text-decoration: underline;
}

#zoneCount {
    margin: .5rem 0;
    font-size: .85rem;
    color: var(--text-color);
}

/* ---------- responsive ---------- */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 12px;
    }

.search-container {
        width: 100%;
    }

#container,
    #featuredZones {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 16px;
    }

.zone-item img {
        height: 140px;
    }

.zone-item button {
        height: 60px;
        font-size: 14px;
    }
}
/* ---------- force Montserrat BLACK everywhere ---------- */
*,
*::before,
*::after,
input,
button,
select,
textarea,
h1, h2, h3, h4, h5, h6,
p, a, span, div, summary, label, li, td, th {
    font-family: 'Montserrat', sans-serif !important;
    font-weight: 900 !important;
}
        /* This makes the text readable when the header is yellow */
.dark-mode header, .dark-mode .zone-header {
    color: #000 !important;
}

/* This makes the search buttons readable too */
.dark-mode .control-buttons button {
    color: #000;
}
    </style>
</head>
<body class="dark-mode">
    <header>
    <div class="header-content">
        <div class="logo">
            <img src="https://codehs.com/uploads/84799a0bb8e09668879b73acd5e7abaa" alt="elias Logo" class="logo-img">
            SIGMA GAMES
        </div>
        <div class="search-container">
            <input type="text" id="searchBar" placeholder="Search zones..." oninput="filterZones()">
            <select id="sortOptions" onchange="sortZones()">
                <option value="name">Name</option>
                <option value="id">ID (Date)</option>
                <option value="popular">Popular</option>
            </select>
        </div>
        <div class="control-buttons">
            <button id="settings" style="background-color: var(--primary-color); color: white; border: none; border-radius: 4px; padding: 0.5rem 1rem; font-size: 16px; cursor: pointer;">Settings</button>
        </div>
    </div>
</header>

<main>
    
    <details id="featuredZonesWrapper" open>
        <summary id="allZonesSummary" style="font-size: 1.2rem; font-weight: bold; cursor: pointer;">Featured Zones</summary>
        <div id="featuredZones" class="zone-container"></div>
    </details>

<details id="allZonesWrapper" open>
        <summary id="allSummary" style="font-size: 1.2rem; font-weight: bold; cursor: pointer;">All Zones</summary>
        <div id="container">Loading...</div>
    </details>

<details id="recentZonesWrapper" open>
        <summary style="font-size: 1.2rem; font-weight: bold; cursor: pointer;">Recently Played</summary>
        <div id="recentZonesList" class="zone-container">
            <p style="color: var(--text-color);">No recently played zones yet.</p>
        </div>
    </details>
</main>

<div id="zoneViewer">
    <div id="zoneLoading">
    <div class="spinner"></div>
</div>
        <div class="zone-header">
            <div class="zone-title">
                <h2 id="zoneName">zone</h2>
                <span id="zoneId" style="display: none;"></span>
                <a id="zoneAuthor" href="#" target="_blank">by Author</a>
            </div>
            <div class="zone-controls">
                <button onclick="fullscreenZone()">Fullscreen</button>
                <button onclick="aboutBlank()">Open in New Tab</button>
                <button onclick="downloadZone()">Download</button>
                <button onclick="closeZone()">Close</button>
            </div>
        </div>
        <iframe id="zoneFrame"></iframe>
    </div>

<div id="popupOverlay">
        <div class="popup">
            <div class="popup-header">
                <h3 id="popupTitle">Title</h3>
                <button id="popupClose" onclick="closePopup()">×</button>
            </div>
            <div id="popupBody">
                Content will be here
            </div>
        </div>
    </div>

<ins class="adsbygoogle"
    style="display:block; text-align:center;"
    data-ad-client="ca-pub-5521219086088837"
    data-ad-slot="5549138288"
    data-ad-format="auto"
    data-full-width-responsive="true"></ins>
   <script>
    (adsbygoogle = window.adsbygoogle || []).push({});
   </script>
    <footer>
        <div class="footer-links">
            <a href="#" onclick="showContact(); return false;">Contact</a>
            <a href="#" onclick="loadPrivacy(); return false;">Privacy Policy</a>
            <a href="javascript:saveData()">Export Data</a>
            <label for="importData" style="color: var(--primary-color); cursor: pointer;">Import Data</label>
            <input type="file" id="importData" style="display: none;" onchange="loadData(event)">
        </div>
    </footer>

lazyImages.forEach(img => {
        imageObserver.observe(img);
    });
}

lazyImages.forEach(img => {
        imageObserver.observe(img);
    });
}

function filterZones() {
    const query = searchBar.value.toLowerCase();
    const filteredZones = zones.filter(zone => zone.name.toLowerCase().includes(query));
    if (query.length !== 0) {
        document.getElementById("featuredZonesWrapper").removeAttribute("open");
    }
    displayZones(filteredZones);
}

function openZone(file) {
    recordRecent(file.id); // Recently Played Tracking

if (file.url.startsWith("http")) {
        window.open(file.url, "_blank");
    } else {

// --- Loading State (fade + disabled iframe) ---
        document.getElementById('zoneName').textContent = "Loading...";
        zoneFrame.style.opacity = "0.3";
        zoneFrame.style.pointerEvents = "none";

// --- SHOW SPINNER (This is Step 3 Part 1) ---
        document.getElementById("zoneLoading").style.display = "block";

const url = file.url.replace("{COVER_URL}", coverURL).replace("{HTML_URL}", htmlURL);

fetch(url + "?t=" + Date.now())
            .then(response => response.text())
            .then(html => {

if (zoneFrame.contentDocument === null) {
                    zoneFrame = document.createElement("iframe");
                    zoneFrame.id = "zoneFrame";
                    zoneViewer.appendChild(zoneFrame);
                }

zoneFrame.contentDocument.open();
                zoneFrame.contentDocument.write(html);
                zoneFrame.contentDocument.close();

// --- REMOVE LOADING STATE ---
                zoneFrame.style.opacity = "1";
                zoneFrame.style.pointerEvents = "auto";

// --- HIDE SPINNER (This is Step 3 Part 1) ---
                document.getElementById("zoneLoading").style.display = "none";

document.getElementById('zoneName').textContent = file.name;
                document.getElementById('zoneId').textContent = file.id;
                document.getElementById('zoneAuthor').textContent = "by " + file.author;

if (file.authorLink) {
                    document.getElementById('zoneAuthor').href = file.authorLink;
                }

zoneViewer.style.display = "block";

const newURL = new URL(window.location);
                newURL.searchParams.set('id', file.id);
                history.pushState(null, '', newURL.toString());
            })
            .catch(error => {
                document.getElementById("zoneLoading").style.display = "none"; // hide spinner on fail too
                alert("Failed to load zone: " + error);
            });
    }
}

function closeZone() {
    zoneViewer.style.display = "none";
    zoneViewer.removeChild(zoneFrame);
    const url = new URL(window.location);
    url.searchParams.delete('id');
    history.pushState(null, '', url.toString());
}

function darkMode() {
    document.body.classList.toggle("dark-mode");
}

function tabCloak() {
    closePopup();
    document.getElementById('popupTitle').textContent = "Tab Cloak";
    const popupBody = document.getElementById('popupBody');
    popupBody.innerHTML = `
        <label for="tab-cloak-textbox" style="font-weight: bold;">Set Tab Title:</label><br>
        <input type="text" id="tab-cloak-textbox" placeholder="Enter new tab name..." oninput="cloakName(this.value)">
        <br><br><br><br>
        <label for="tab-cloak-textbox" style="font-weight: bold;">Set Tab Icon:</label><br>
        <input type="text" id="tab-cloak-textbox" placeholder="Enter new tab icon..." oninput='cloakIcon(this.value)'>
        <br><br><br>
    `;
    popupBody.contentEditable = false;
    document.getElementById('popupOverlay').style.display = "flex";
}

const settings = document.getElementById('settings');
settings.addEventListener('click', () => {
    document.getElementById('popupTitle').textContent = "Settings";
    const popupBody = document.getElementById('popupBody');
    popupBody.innerHTML = `
    <button id="settings-button" onclick="darkMode()">Toggle Dark Mode</button>
    <br><br>
    <button id="settings-button" onclick="tabCloak()">Tab Cloak</button>
    <br>
    `;
    popupBody.contentEditable = false;
    document.getElementById('popupOverlay').style.display = "flex";
});

function showContact() {
    document.getElementById('popupTitle').textContent = "Contact";
    const popupBody = document.getElementById('popupBody');
    popupBody.innerHTML = `
    <p>Discord: https://discord.gg/NAFw4ykZ7n</p>
    <p>Email: gn.math.business@gmail.com</p>`;
    popupBody.contentEditable = false;
    document.getElementById('popupOverlay').style.display = "flex";
}

function loadPrivacy() {
    document.getElementById('popupTitle').textContent = "Privacy Policy";
    const popupBody = document.getElementById('popupBody');
    popupBody.innerHTML = `
        <div style="max-height: 60vh; overflow-y: auto;">
            <h2>PRIVACY POLICY</h2>
            <p>Last updated April 17, 2025</p>
            <p>This Privacy Notice for gn-math ("we," "us," or "our"), describes how and why we might access, collect, store, use, and/or share ("process") your personal information when you use our services ("Services"), including when you:</p>
            <ul>
                <li>Visit our website at <a href="https://gn-math.github.io">https://gn-math.github.io</a>, or any website of ours that links to this Privacy Notice</li>
                <li>Engage with us in other related ways, including any sales, marketing, or events</li>
            </ul>
            <p>Questions or concerns? Reading this Privacy Notice will help you understand your privacy rights and choices. We are responsible for making decisions about how your personal information is processed. If you do not agree with our policies and practices, please do not use our Services. If you still have any questions or concerns, please contact us at <a href="https://discord.gg/NAFw4ykZ7n">https://discord.gg/NAFw4ykZ7n</a>.</p>
            
            <h3>SUMMARY OF KEY POINTS</h3>
            <p>This summary provides key points from our Privacy Notice, but you can find out more details about any of these topics by clicking the link following each key point or by using our table of contents below to find the section you are looking for.</p>
            
            <p><strong>What personal information do we process?</strong> When you visit, use, or navigate our Services, we may process personal information depending on how you interact with us and the Services, the choices you make, and the products and features you use. Learn more about personal information you disclose to us.</p>
            
            <p><strong>Do we process any sensitive personal information?</strong> Some of the information may be considered "special" or "sensitive" in certain jurisdictions, for example your racial or ethnic origins, sexual orientation, and religious beliefs. We do not process sensitive personal information.</p>
            
            <p><strong>Do we collect any information from third parties?</strong> We do not collect any information from third parties.</p>
            
            <p><strong>How do we process your information?</strong> We process your information to provide, improve, and administer our Services, communicate with you, for security and fraud prevention, and to comply with law. We may also process your information for other purposes with your consent. We process your information only when we have a valid legal reason to do so. Learn more about how we process your information.</p>
            
            <p><strong>In what situations and with which parties do we share personal information?</strong> We may share information in specific situations and with specific third parties. Learn more about when and with whom we share your personal information.</p>
            
            <p><strong>How do we keep your information safe?</strong> We have adequate organizational and technical processes and procedures in place to protect your personal information. However, no electronic transmission over the internet or information storage technology can be guaranteed to be 100% secure, so we cannot promise or guarantee that hackers, cybercriminals, or other unauthorized third parties will not be able to defeat our security and improperly collect, access, steal, or modify your information. Learn more about how we keep your information safe.</p>
            
            <p><strong>What are your rights?</strong> Depending on where you are located geographically, the applicable privacy law may mean you have certain rights regarding your personal information. Learn more about your privacy rights.</p>
            
            <p><strong>How do you exercise your rights?</strong> The easiest way to exercise your rights is by submitting a data subject access request, or by contacting us. We will consider and act upon any request in accordance with applicable data protection laws.</p>
        </div>
    `;
    popupBody.contentEditable = false;
    document.getElementById('popupOverlay').style.display = "flex";
}

function closePopup() {
    document.getElementById('popupOverlay').style.display = "none";
}
listZones();

const schoolList = ["deledao", "goguardian", "lightspeed", "linewize", "securly", ".edu/"];

function isBlockedDomain(url) {
    const domain = new URL(url, location.origin).hostname + "/";
    return schoolList.some(school => domain.includes(school));
}

const originalFetch = window.fetch;
window.fetch = function (url, options) {
    if (isBlockedDomain(url)) {
        console.warn(`lam`);
        return Promise.reject(new Error("lam"));
    }
    return originalFetch.apply(this, arguments);
};

const originalOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function (method, url) {
    if (isBlockedDomain(url)) {
        console.warn(`lam`);
        return;
    }
    return originalOpen.apply(this, arguments);
};

HTMLCanvasElement.prototype.toDataURL = function (...args) {
    return "";
};
    </script>
</body>
</html>

Consigliato

Lettore di giochi Flash con emulatore Ruffle

Giochi sbloccati: gioca gratuitamente online a scuola

Giochi sbloccati: GN-Math, gioca gratis online

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