🛡️ 守卫城市City Defense
在线守卫城市小游戏：一波波流星从天而降，点击天空发射能量弹并展开防护罩，把流星在半空中消除，保护地面上的 6 座城市。能量有限，要预判流星的轨迹提前布置；后面的波次流星更快、更多，还会在空中分裂。守住一波可按剩余城市和能量获得奖励分，城市全部被毁时结束。City Defense online: waves of meteors fall from the sky — tap to fire energy shots that open shields in mid-air and wipe them out before they hit your six cities. Energy is limited, so read each meteor's path and place shields ahead of it; later waves are faster, denser and some meteors split. Surviving a wave earns a bonus for remaining cities and energy; the game ends when every city is gone.
点击或用鼠标点击天空中的位置发射能量弹。P 暂停，N 重开。Tap or click a spot in the sky to fire an energy shot. P pauses, N restarts.
玩法说明与常见问题How to play & FAQ
「守卫城市」怎么玩？How do I play City Defense?
能量弹从中间的基地飞向你点击的位置，到达后展开一个会先变大再缩小的绿色防护罩，碰到的流星都会被消除，每颗 25 分。弹道需要飞行时间，所以要点在流星前进方向的前方。粉色的流星飞到一半会分裂成两颗，最好尽早处理。每波结束时，每座幸存的城市奖励 100 分，每点剩余能量 5 分。Energy shots fly from the central base to where you tapped, then open a green shield that grows and shrinks, removing every meteor it touches for 25 points each. Shots take time to travel, so tap ahead of a meteor's path. Pink meteors split in two halfway down — deal with them early. At the end of each wave every surviving city is worth 100 and each unused energy point 5.
能量用完了怎么办？What if I run out of energy?
这一波就只能看着剩下的流星落地了，下一波会重新补满能量。尽量一发防护罩同时消除多颗流星。You'll have to watch the remaining meteors land; energy refills next wave. Try to catch several meteors with one shield.
被毁的城市能恢复吗？Do destroyed cities come back?
不会，所以前几波尽量保住所有城市，后面会轻松很多。No — so protect every city in the early waves and the later ones get much easier.
「守卫城市」免费吗？需要下载吗？Is City Defense 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.