🏰 塔防Tower Defense
在线塔防小游戏：敌人沿着弯弯曲曲的道路冲向你的基地，在路边草地上建造箭塔、炮塔和冰塔阻止它们。消灭敌人获得金币，用来建新塔或把塔升级到 3 星。一共 20 波，每第 5 波会出现血量很厚的大块头，基地生命归零就失败。策略与操作兼顾，手机电脑都能玩。Tower Defense online: enemies march along a winding road toward your base — build arrow, cannon and frost towers on the grass beside it to stop them. Defeated enemies give gold for new towers or upgrades up to three stars. Survive all 20 waves (every fifth brings a tough big one); if the base runs out of lives you lose. Strategy and timing on phone or computer.
先选塔的种类（或按 1 / 2 / 3），再点道路旁的草地建造；点已有的塔花金币升级。P 暂停，N 重开。Pick a tower (or press 1 / 2 / 3), then tap the grass beside the road to build; tap an existing tower to upgrade it with gold. P pauses, N restarts.
玩法说明与常见问题How to play & FAQ
「塔防」怎么玩？How do I play Tower Defense?
箭塔便宜、射速快，适合打普通敌人；炮塔射得慢但能炸伤一片；冰塔伤害低，但能让敌人减速一半，和其他塔搭配效果最好。把塔建在道路拐弯处，可以覆盖更长的路段。升级会提高伤害和射程。Arrow towers are cheap and fast — good against ordinary enemies; cannons fire slowly but hit everything in a small area; frost towers do little damage but halve enemy speed, which makes every other tower better. Towers at corners cover more road. Upgrades raise both damage and range.
金币有什么用？会花真钱吗？What is gold for — does it cost real money?
金币只是游戏里的资源，消灭敌人就能获得，用来建塔和升级，和现实中的钱没有任何关系。Gold is just an in-game resource earned by defeating enemies and spent on towers and upgrades — it has nothing to do with real money.
敌人漏过去会怎样？What happens when enemies get through?
普通敌人到达基地扣 1 点生命，大块头扣 5 点；生命降到 0 游戏结束。An ordinary enemy reaching the base costs 1 life, a big one 5; at 0 lives the game is over.
「塔防」免费吗？需要下载吗？Is Tower 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.