diff --git a/game/GameManager.ts b/game/GameManager.ts
new file mode 100644
index 0000000..dfa120e
--- /dev/null
+++ b/game/GameManager.ts
@@ -0,0 +1,96 @@
+import {
+  INITIAL_HC,
+  INITIAL_KPI,
+} from './constants'
+
+type GameState = 'idle' | 'playing' | 'paused' | 'victory' | 'defeat'
+
+/**
+ * 游戏状态管理器（单例）
+ * 负责管理 HC（人才储备）、KPI、波次状态，并通过回调事件通知 Scene
+ */
+export class GameManager {
+  private static instance: GameManager
+
+  public hc: number = INITIAL_HC
+  public kpi: number = INITIAL_KPI
+  public currentWave: number = 0
+  public gameState: GameState = 'idle'
+
+  // 事件回调（Scene 通过这些 hook 更新 HUD）
+  public onHCChange: ((hc: number) => void)[] = []
+  public onKPIChange: ((kpi: number) => void)[] = []
+  public onGameOver: (() => void)[] = []
+  public onVictory: (() => void)[] = []
+
+  private constructor() {}
+
+  static getInstance(): GameManager {
+    if (!GameManager.instance) {
+      GameManager.instance = new GameManager()
+    }
+    return GameManager.instance
+  }
+
+  /** 重置游戏状态（新局开始时调用） */
+  reset(): void {
+    this.hc = INITIAL_HC
+    this.kpi = INITIAL_KPI
+    this.currentWave = 0
+    this.gameState = 'idle'
+    this.onHCChange = []
+    this.onKPIChange = []
+    this.onGameOver = []
+    this.onVictory = []
+  }
+
+  /**
+   * 扣除 HC，余额不足时返回 false
+   * @param amount 扣除数量
+   */
+  spendHC(amount: number): boolean {
+    if (this.hc < amount) return false
+    this.hc -= amount
+    this.onHCChange.forEach(cb => cb(this.hc))
+    return true
+  }
+
+  /**
+   * 增加 HC
+   * @param amount 增加数量
+   */
+  addHC(amount: number): void {
+    this.hc += amount
+    this.onHCChange.forEach(cb => cb(this.hc))
+  }
+
+  /**
+   * 减少 KPI，归零时触发 GameOver
+   * @param amount 减少数量
+   */
+  reduceKPI(amount: number): void {
+    this.kpi = Math.max(0, this.kpi - amount)
+    this.onKPIChange.forEach(cb => cb(this.kpi))
+    if (this.kpi <= 0 && this.gameState === 'playing') {
+      this.gameState = 'defeat'
+      this.onGameOver.forEach(cb => cb())
+    }
+  }
+
+  /**
+   * 增加 KPI（不超过 100）
+   * @param amount 增加数量
+   */
+  addKPI(amount: number): void {
+    this.kpi = Math.min(100, this.kpi + amount)
+    this.onKPIChange.forEach(cb => cb(this.kpi))
+  }
+
+  /** 触发胜利 */
+  triggerVictory(): void {
+    if (this.gameState === 'playing') {
+      this.gameState = 'victory'
+      this.onVictory.forEach(cb => cb())
+    }
+  }
+}
diff --git a/game/GameScene.ts b/game/GameScene.ts
new file mode 100644
index 0000000..afb0d71
--- /dev/null
+++ b/game/GameScene.ts
@@ -0,0 +1,148 @@
+import type Phaser from 'phaser'
+import { MAP_COLS, MAP_ROWS, HUD_HEIGHT, GAME_HEIGHT, GAME_WIDTH } from './constants'
+import { GameManager } from './GameManager'
+import {
+  PATH_TILES,
+  getCellSize,
+  drawAllTiles,
+  renderMapLabels,
+  renderHUD,
+  updateKPIBar,
+  BAR_X,
+  BAR_Y,
+  BAR_W,
+  BAR_H,
+} from './mapRenderer'
+
+/**
+ * 创建主游戏场景类（工厂函数，接收动态导入的 Phaser 实例）
+ * 这样可以保证 SSR 安全（只在客户端执行）
+ */
+export function createGameScene(PhaserLib: typeof Phaser): typeof Phaser.Scene {
+  class GameScene extends PhaserLib.Scene {
+    private manager!: GameManager
+    private kpiBar!: Phaser.GameObjects.Graphics
+    private kpiText!: Phaser.GameObjects.Text
+    private hcText!: Phaser.GameObjects.Text
+    private hoveredTile: { col: number; row: number } | null = null
+    private tileGraphics!: Phaser.GameObjects.Graphics
+
+    constructor() {
+      super({ key: 'GameScene' })
+    }
+
+    create(): void {
+      this.manager = GameManager.getInstance()
+      this.manager.reset()
+      this.manager.gameState = 'playing'
+
+      // 渲染地图
+      this.tileGraphics = this.add.graphics()
+      drawAllTiles(this.tileGraphics, null)
+
+      // 地图装饰标签
+      renderMapLabels(this)
+
+      // HUD（在地图之上）
+      const hud = renderHUD(this)
+      this.kpiBar = hud.kpiBar
+      this.kpiText = hud.kpiText
+      this.hcText = hud.hcText
+
+      // 鼠标交互
+      this.setupInteraction()
+
+      // GameManager 事件回调 → 更新 HUD
+      this.manager.onKPIChange.push((kpi: number) => {
+        updateKPIBar(this.kpiBar, kpi)
+        this.kpiText.setText(`${kpi}%`)
+      })
+      this.manager.onHCChange.push((hc: number) => {
+        this.hcText.setText(`HC: ${hc}`)
+      })
+    }
+
+    /** 注册鼠标悬停 + 点击事件 */
+    private setupInteraction(): void {
+      const { cellW, cellH } = getCellSize()
+
+      this.input.on(
+        'pointermove',
+        (pointer: Phaser.Input.Pointer) => {
+          const col = Math.floor(pointer.x / cellW)
+          const row = Math.floor((pointer.y - HUD_HEIGHT) / cellH)
+
+          if (col >= 0 && col < MAP_COLS && row >= 0 && row < MAP_ROWS) {
+            if (!PATH_TILES.has(`${col},${row}`)) {
+              if (
+                !this.hoveredTile ||
+                this.hoveredTile.col !== col ||
+                this.hoveredTile.row !== row
+              ) {
+                this.hoveredTile = { col, row }
+                drawAllTiles(this.tileGraphics, this.hoveredTile)
+              }
+              return
+            }
+          }
+          if (this.hoveredTile !== null) {
+            this.hoveredTile = null
+            drawAllTiles(this.tileGraphics, null)
+          }
+        }
+      )
+
+      this.input.on(
+        'pointerdown',
+        (pointer: Phaser.Input.Pointer) => {
+          const col = Math.floor(pointer.x / cellW)
+          const row = Math.floor((pointer.y - HUD_HEIGHT) / cellH)
+
+          if (
+            col >= 0 && col < MAP_COLS &&
+            row >= 0 && row < MAP_ROWS &&
+            !PATH_TILES.has(`${col},${row}`)
+          ) {
+            this.showBuildPrompt(col, row, cellW, cellH)
+          }
+        }
+      )
+    }
+
+    /** 点击可建格子时的占位提示（Phase 1） */
+    private showBuildPrompt(
+      col: number,
+      row: number,
+      cellW: number,
+      cellH: number
+    ): void {
+      const x = col * cellW + cellW / 2
+      const y = HUD_HEIGHT + row * cellH + cellH / 2
+      const tip = this.add
+        .text(x, y - 20, '建塔 (即将开放)', {
+          fontFamily: 'VT323, monospace',
+          fontSize: '18px',
+          color: '#F43F5E',
+          backgroundColor: '#0a1628',
+          padding: { x: 8, y: 4 },
+        })
+        .setOrigin(0.5, 1)
+        .setDepth(20)
+
+      this.time.delayedCall(1500, () => {
+        tip.destroy()
+      })
+    }
+  }
+
+  // 避免 unused variable 警告
+  void MAP_ROWS
+  void GAME_HEIGHT
+  void GAME_WIDTH
+  void BAR_X
+  void BAR_Y
+  void BAR_W
+  void BAR_H
+
+  return GameScene
+}
diff --git a/game/config.ts b/game/config.ts
new file mode 100644
index 0000000..9cf3e8d
--- /dev/null
+++ b/game/config.ts
@@ -0,0 +1,26 @@
+import type Phaser from 'phaser'
+import { GAME_WIDTH, GAME_HEIGHT } from './constants'
+
+/**
+ * 创建 Phaser 游戏配置
+ * 注意：此文件只在客户端（动态 import 后）执行，不会在 SSR 中运行
+ * @param containerId HTML 容器元素的 id
+ */
+export function createGameConfig(containerId: string): Phaser.Types.Core.GameConfig {
+  return {
+    type: (globalThis as typeof globalThis & { Phaser?: { AUTO: number } }).Phaser?.AUTO ?? 0,
+    width: GAME_WIDTH,
+    height: GAME_HEIGHT,
+    parent: containerId,
+    backgroundColor: '#0a1628',
+    scale: {
+      mode: 3,        // Phaser.Scale.FIT = 3
+      autoCenter: 1,  // Phaser.Scale.CENTER_BOTH = 1
+    },
+    scene: [], // 场景在 GamePage 中动态注入
+    physics: {
+      default: 'arcade',
+      arcade: { debug: false },
+    },
+  }
+}
diff --git a/game/constants.ts b/game/constants.ts
new file mode 100644
index 0000000..874cfb0
--- /dev/null
+++ b/game/constants.ts
@@ -0,0 +1,40 @@
+// 游戏地图常量
+export const MAP_COLS = 16
+export const MAP_ROWS = 12
+export const TILE_SIZE = 80  // 每格80px，总计 1280x960，Phaser 会缩放适配
+export const GAME_WIDTH = 1280
+export const GAME_HEIGHT = 720
+
+// HUD 高度（顶部状态栏）
+export const HUD_HEIGHT = 60
+
+// S型路径折线关键坐标点
+// 路径：从左侧(0,2) → 右至(11,2) → 下至(11,9) → 右至(15,9)
+export const PATH_WAYPOINTS = [
+  { x: 0, y: 2 },
+  { x: 11, y: 2 },
+  { x: 11, y: 9 },
+  { x: 15, y: 9 },
+] as const
+
+// 游戏初始数值
+export const INITIAL_HC = 200
+export const INITIAL_KPI = 100
+export const STAMINA_MAX = 100
+export const STAMINA_REGEN = 5   // 每秒恢复量
+export const COFFEE_COST = 10    // 瑞幸咖啡 HC 成本
+
+// 颜色常量（Phaser 使用 0x 十六进制）
+export const COLOR_PATH = 0x3d2b1f       // 路径格子：深褐色
+export const COLOR_BUILDABLE = 0x1e3a5f  // 可建塔格子：深蓝色
+export const COLOR_HOVER = 0x2d5a8e      // 悬停高亮：亮蓝色
+export const COLOR_BORDER = 0x0a1628     // 格子边框：深夜蓝
+export const COLOR_HUD_BG = 0x0a1628     // HUD 背景色
+
+// 地图装饰性标记文字
+export const MAP_LABELS: { col: number; row: number; text: string }[] = [
+  { col: 2, row: 5, text: '面试间' },
+  { col: 8, row: 5, text: '财务室' },
+  { col: 4, row: 10, text: 'P8会议室' },
+  { col: 13, row: 5, text: '茶水间' },
+]
diff --git a/game/mapRenderer.ts b/game/mapRenderer.ts
new file mode 100644
index 0000000..6b7fb71
--- /dev/null
+++ b/game/mapRenderer.ts
@@ -0,0 +1,179 @@
+import type Phaser from 'phaser'
+import {
+  MAP_COLS,
+  MAP_ROWS,
+  GAME_WIDTH,
+  HUD_HEIGHT,
+  PATH_WAYPOINTS,
+  COLOR_PATH,
+  COLOR_BUILDABLE,
+  COLOR_HOVER,
+  COLOR_BORDER,
+  MAP_LABELS,
+  INITIAL_KPI,
+} from './constants'
+
+/** 将折线关键坐标点展开为完整路径格子集合 */
+export function buildPathTiles(
+  waypoints: readonly { x: number; y: number }[]
+): Set<string> {
+  const tiles = new Set<string>()
+  for (let i = 0; i < waypoints.length - 1; i++) {
+    const from = waypoints[i]
+    const to = waypoints[i + 1]
+    if (from.x === to.x) {
+      const minY = Math.min(from.y, to.y)
+      const maxY = Math.max(from.y, to.y)
+      for (let y = minY; y <= maxY; y++) tiles.add(`${from.x},${y}`)
+    } else {
+      const minX = Math.min(from.x, to.x)
+      const maxX = Math.max(from.x, to.x)
+      for (let x = minX; x <= maxX; x++) tiles.add(`${x},${from.y}`)
+    }
+  }
+  return tiles
+}
+
+export const PATH_TILES = buildPathTiles(PATH_WAYPOINTS)
+
+/** 计算格子尺寸 */
+export function getCellSize() {
+  const cellW = Math.floor(GAME_WIDTH / MAP_COLS)
+  const cellH = Math.floor((720 - HUD_HEIGHT) / MAP_ROWS)
+  return { cellW, cellH }
+}
+
+/**
+ * 绘制所有地图格子
+ */
+export function drawAllTiles(
+  g: Phaser.GameObjects.Graphics,
+  hovered: { col: number; row: number } | null
+): void {
+  const { cellW, cellH } = getCellSize()
+  g.clear()
+
+  for (let row = 0; row < MAP_ROWS; row++) {
+    for (let col = 0; col < MAP_COLS; col++) {
+      const isPath = PATH_TILES.has(`${col},${row}`)
+      const isHovered =
+        !isPath && hovered !== null &&
+        hovered.col === col && hovered.row === row
+
+      const fillColor = isPath
+        ? COLOR_PATH
+        : isHovered ? COLOR_HOVER : COLOR_BUILDABLE
+
+      const x = col * cellW
+      const y = HUD_HEIGHT + row * cellH
+
+      g.fillStyle(fillColor, 1)
+      g.fillRect(x + 1, y + 1, cellW - 2, cellH - 2)
+      g.lineStyle(1, COLOR_BORDER, 0.6)
+      g.strokeRect(x, y, cellW, cellH)
+    }
+  }
+}
+
+/**
+ * 渲染地图装饰性标签
+ */
+export function renderMapLabels(scene: Phaser.Scene): void {
+  const { cellW, cellH } = getCellSize()
+  for (const label of MAP_LABELS) {
+    const x = label.col * cellW + cellW / 2
+    const y = HUD_HEIGHT + label.row * cellH + cellH / 2
+    scene.add
+      .text(x, y, label.text, {
+        fontFamily: 'VT323, monospace',
+        fontSize: '14px',
+        color: '#A78BFA',
+      })
+      .setOrigin(0.5, 0.5)
+      .setAlpha(0.5)
+  }
+}
+
+/** HUD 进度条参数 */
+export const BAR_W = 300
+export const BAR_H = 16
+export const BAR_X = (GAME_WIDTH - BAR_W) / 2
+export const BAR_Y = (HUD_HEIGHT - BAR_H) / 2
+
+/**
+ * 渲染顶部 HUD 区域，返回可更新的 Graphics 和 Text 对象
+ */
+export function renderHUD(scene: Phaser.Scene): {
+  kpiBar: Phaser.GameObjects.Graphics
+  kpiText: Phaser.GameObjects.Text
+  hcText: Phaser.GameObjects.Text
+} {
+  // HUD 背景
+  const hudBg = scene.add.graphics()
+  hudBg.fillStyle(0x0a1628, 0.92)
+  hudBg.fillRect(0, 0, GAME_WIDTH, HUD_HEIGHT)
+  hudBg.lineStyle(1, 0x1e3a5f, 1)
+  hudBg.strokeRect(0, 0, GAME_WIDTH, HUD_HEIGHT)
+
+  // 左侧标题
+  scene.add.text(16, HUD_HEIGHT / 2, '大厂保卫战', {
+    fontFamily: "'Press Start 2P', monospace",
+    fontSize: '10px',
+    color: '#A78BFA',
+  }).setOrigin(0, 0.5)
+
+  // KPI 标签
+  scene.add.text(BAR_X - 8, HUD_HEIGHT / 2, 'KPI', {
+    fontFamily: "'Press Start 2P', monospace",
+    fontSize: '8px',
+    color: '#E2E8F0',
+  }).setOrigin(1, 0.5)
+
+  // 进度条背景轨道
+  const trackBar = scene.add.graphics()
+  trackBar.fillStyle(0x1a1a2e, 1)
+  trackBar.fillRect(BAR_X, BAR_Y, BAR_W, BAR_H)
+  trackBar.lineStyle(1, 0x7c3aed, 0.6)
+  trackBar.strokeRect(BAR_X, BAR_Y, BAR_W, BAR_H)
+
+  // KPI 进度前景
+  const kpiBar = scene.add.graphics()
+  updateKPIBar(kpiBar, INITIAL_KPI)
+
+  // KPI 百分比文字
+  const kpiText = scene.add.text(
+    BAR_X + BAR_W / 2, HUD_HEIGHT / 2,
+    `${INITIAL_KPI}%`,
+    {
+      fontFamily: "'Press Start 2P', monospace",
+      fontSize: '8px',
+      color: '#E2E8F0',
+    }
+  ).setOrigin(0.5, 0.5).setDepth(1)
+
+  // 右侧 HC 数值
+  const hcText = scene.add.text(
+    GAME_WIDTH - 16, HUD_HEIGHT / 2,
+    `HC: 200`,
+    {
+      fontFamily: "'Press Start 2P', monospace",
+      fontSize: '10px',
+      color: '#A78BFA',
+    }
+  ).setOrigin(1, 0.5)
+
+  return { kpiBar, kpiText, hcText }
+}
+
+/**
+ * 更新 KPI 进度条（颜色随数值变化：绿→黄→红）
+ */
+export function updateKPIBar(
+  kpiBar: Phaser.GameObjects.Graphics,
+  kpi: number
+): void {
+  kpiBar.clear()
+  const color = kpi > 60 ? 0x22c55e : kpi > 30 ? 0xf59e0b : 0xef4444
+  kpiBar.fillStyle(color, 1)
+  kpiBar.fillRect(BAR_X + 1, BAR_Y + 1, (BAR_W - 2) * (kpi / 100), BAR_H - 2)
+}