PRIVACY POLICY

LAST UPDATED: APRIL 2026

This Privacy Policy describes how Tetris Battle ("we", "us", or "our") collects, uses, and shares information when you use our website at ai-game-tetris.cdtsapp.com (the "Service").

1. INFORMATION WE COLLECT

We collect the following types of information:

Usage Data: Pages visited, screens viewed, buttons clicked, game mode selected, score, difficulty, and session duration — collected automatically via Google Analytics 4.
Device & Browser Data: IP address (anonymized), browser type, operating system, screen size, and language — collected by Google Analytics.
Player Name: The nickname you enter is stored locally in your browser (localStorage) and submitted to our leaderboard database (Supabase) only when you complete a game.
Cookies: Google AdSense and Google Analytics use cookies and similar tracking technologies to serve personalized ads and analyze traffic.

2. HOW WE USE YOUR INFORMATION

To display global leaderboard rankings.
To analyze how players interact with the game and improve the experience.
To display relevant advertisements through Google AdSense.

3. THIRD-PARTY SERVICES

We use the following third-party services that may collect data independently:

Google Analytics 4 — website analytics. Google Privacy Policy
Google AdSense — advertising. Google Ads Policy
Supabase — leaderboard database and real-time game rooms. Supabase Privacy Policy

4. COOKIES & OPT-OUT

Google AdSense uses cookies to serve ads based on your prior visits. You can opt out of personalized advertising by visiting Google Ad Settings. You can also install the Google Analytics Opt-out Browser Add-on to prevent Analytics data collection.

5. DATA RETENTION

Leaderboard entries (player name + score) are stored indefinitely unless you request deletion. Analytics data is retained for 14 months per Google's default settings.

6. CHILDREN'S PRIVACY

This Service is not directed to children under the age of 13. We do not knowingly collect personal information from children.

7. CHANGES TO THIS POLICY

We may update this Privacy Policy from time to time. The "Last Updated" date at the top of this page reflects the most recent revision.

8. CONTACT

If you have any questions about this Privacy Policy, please contact us at: cdts.change@gmail.com

隐私政策

最后更新：2026年4月

本隐私政策说明 Tetris Battle（"我们"）在您使用 ai-game-tetris.cdtsapp.com（"服务"）时如何收集、使用和共享信息。

1. 我们收集的信息

我们收集以下类型的信息：

使用数据：访问的页面、查看的界面、点击的按钮、选择的游戏模式、分数、难度及会话时长——通过 Google Analytics 4 自动收集。
设备与浏览器数据：IP 地址（已匿名化）、浏览器类型、操作系统、屏幕尺寸及语言——由 Google Analytics 收集。
玩家名称：您输入的昵称存储在浏览器本地（localStorage），仅在完成游戏后提交至我们的排行榜数据库（Supabase）。
Cookies：Google AdSense 和 Google Analytics 使用 Cookies 及类似技术投放个性化广告并分析流量。

2. 信息使用方式

展示全球排行榜排名。
分析玩家行为，持续改善游戏体验。
通过 Google AdSense 展示相关广告。

3. 第三方服务

我们使用以下可能独立收集数据的第三方服务：

Google Analytics 4 — 网站分析。Google 隐私政策
Google AdSense — 广告投放。Google 广告政策
Supabase — 排行榜数据库与实时游戏房间。Supabase 隐私政策

4. Cookies 与退出选项

Google AdSense 根据您的访问记录使用 Cookies 投放广告。您可访问 Google 广告设置选择退出个性化广告，也可安装 Google Analytics 退出浏览器插件阻止数据收集。

5. 数据保留

排行榜条目（玩家名称 + 分数）将永久保存，除非您请求删除。分析数据按 Google 默认设置保留 14 个月。

6. 儿童隐私

本服务不面向 13 岁以下儿童，我们不会有意收集儿童的个人信息。

7. 政策变更

我们可能不定期更新本隐私政策，页面顶部的"最后更新"日期将反映最新修订时间。

8. 联系方式

如对本隐私政策有任何疑问，请通过以下方式联系我们：cdts.change@gmail.com