🐍 贪吃蛇Snake
经典贪吃蛇在线玩：方向键、WASD 或手机滑动控制，三档速度、可选穿墙模式，暂停/继续，自动记录各模式最高分。Play classic Snake online: steer with the arrow keys, WASD or swipes, pick from three speeds or wrap-around walls, pause any time, and beat your best score per mode.
方向键 / WASD 控制方向，空格/P 暂停；手机上在棋盘上滑动或用下方方向键。Arrow keys or WASD to steer, Space/P to pause; on a phone swipe on the board or use the pad.
玩法说明与常见问题How to play & FAQ
「贪吃蛇」怎么玩？How do I play Snake?
控制小蛇吃掉红色的食物，每吃一个身体变长一节、得 10 分。撞到墙壁（关闭穿墙时）或咬到自己就结束。打开「穿墙」后从一边出去会从另一边回来。Guide the snake to the red food; every bite makes it one segment longer and scores 10 points. Hitting a wall (with wrap off) or your own tail ends the game. With “Wrap walls” on you come back out of the opposite side.
最高分是怎么保存的？How are best scores saved?
每种速度和是否穿墙的组合都单独记录最高分，保存在你浏览器的本地存储里，不会上传。Each speed and wrap combination keeps its own best score in your browser’s local storage. Nothing is uploaded.
为什么不能直接掉头？Why can’t I turn straight back?
小蛇不能 180° 掉头（否则会立刻咬到自己）。连续快速按两个方向（例如上、左）会依次执行，方便急转弯。The snake can’t reverse into itself. Quick presses are queued, so tapping two directions in a row (say up then left) makes a tight U-turn.
切到别的标签页会怎样？What happens if I switch tabs?
游戏会自动暂停，回来后点「继续」或按空格接着玩。The game pauses automatically; press Resume or Space when you come back.
「贪吃蛇」免费吗？需要下载吗？Is Snake free? Do I need to download anything?
完全免费，无需注册、下载或安装，打开网页就能玩，手机、平板和电脑都支持；游戏完全在你的浏览器本地运行，不会上传任何数据。It is completely free with no sign-up, download or install — just open the page on a phone, tablet or computer. The game runs entirely in your browser and nothing is uploaded.