Here are a few options for a description for the WordPress post tag “線上遊戲” (Online Games) in Traditional Chinese, ranging in style and length. Choose the one that best fits the overall tone and purpose of your website:

**Option 1: Concise and Informative**

> 探索各式各樣的線上遊戲，包括多人遊戲、角色扮演、策略遊戲等等。 隨時掌握最新的遊戲資訊和遊戲推薦。
>
> *(Explore a variety of online games, including multiplayer games, role-playing games, strategy games, and more. Stay up-to-date with the latest game information and recommendations.)*

**Option 2: More Descriptive**

> 這個標籤涵蓋所有關於線上遊戲的內容，從熱門遊戲的評測、最新遊玩攻略，到各種平台的遊戲推薦，無論您是休閒玩家還是硬核愛好者，都能在這裡找到感興趣的內容。
>
> *(This tag covers all content related to online games, from reviews of popular games and the latest game guides, to game recommendations for various platforms. Whether you’re a casual gamer or a seasoned enthusiast, you’ll find something of interest here.)*

**Option 3: Focus on Community**

> 加入我們的線上遊戲社群！ 這裡分享遊戲攻略、討論遊戲心得、交流遊戲資訊。 找到屬於你的遊戲夥伴，一同探索線上遊戲的無限可能！
>
> *(Join our online game community! Here, share game guides, discuss gaming experiences, and exchange game information. Find your gaming companions and explore the limitless possibilities of online games together!)*

**Option 4: Short and Sweet**

> 關於線上遊戲的一切！ 遊戲評測、攻略、新聞，全在這裡！
>
> *(Everything about online games! Game reviews, guides, news, all here!)*

**How to use this in WordPress:**

1. **Log in to your WordPress dashboard.**
2. **Go to Posts > Tags.**
3. **Find the “線上遊戲” tag or create a new one.**
4. **In the “Description” field, enter the text you chose.**
5. **Click “Update” (if existing) or “Add New Tag” (if creating).**

Remember to choose the description that best represents the content on your website and appeals to your target audience. Good luck!