diff --git a/src/game/Game.ts b/src/game/Game.ts
new file mode 100644
index 0000000..84c0979
--- /dev/null
+++ b/src/game/Game.ts
@@ -0,0 +1,198 @@
+/**
+ * @author aevgarik@gmail.com
+ * @date 2026-03-22
+ *
+ * Главный класс игры ColorLine98
+ */
+
+import type { Board, BallColor } from './Board'
+import {
+  createEmptyBoard,
+  getRandomColor,
+  getEmptyCells,
+  INITIAL_BALLS,
+  BALLS_PER_TURN,
+} from './Board'
+import { findPath } from './PathFinder'
+import { checkLines } from './LineChecker'
+import type { LineInfo } from './LineChecker'
+
+const SCORE_TABLE: Record<number, number> = {
+  5: 10,
+  6: 12,
+  7: 18,
+  8: 28,
+}
+
+function getLineScore(length: number): number {
+  if (SCORE_TABLE[length] !== undefined) {
+    return SCORE_TABLE[length]
+  }
+  if (length >= 9) {
+    return (length - 8) * 14 + 42
+  }
+  return 0
+}
+
+export interface GameState {
+  board: Board
+  score: number
+  nextBalls: BallColor[]
+  selectedCell: { row: number; col: number } | null
+  gameOver: boolean
+}
+
+export type GameListener = (state: GameState) => void
+
+export class Game {
+  private state: GameState
+  private listeners: GameListener[] = []
+
+  constructor() {
+    this.state = {
+      board: createEmptyBoard(),
+      score: 0,
+      nextBalls: [],
+      selectedCell: null,
+      gameOver: false,
+    }
+  }
+
+  getState(): GameState {
+    return { ...this.state }
+  }
+
+  subscribe(listener: GameListener): () => void {
+    this.listeners.push(listener)
+    return () => {
+      this.listeners = this.listeners.filter((l) => l !== listener)
+    }
+  }
+
+  private notify(): void {
+    const state = this.getState()
+    this.listeners.forEach((l) => l(state))
+  }
+
+  startNewGame(): void {
+    this.state = {
+      board: createEmptyBoard(),
+      score: 0,
+      nextBalls: [],
+      selectedCell: null,
+      gameOver: false,
+    }
+
+    this.placeRandomBalls(INITIAL_BALLS)
+    this.generateNextBalls()
+    this.notify()
+  }
+
+  private placeRandomBalls(count: number): boolean {
+    const emptyCells = getEmptyCells(this.state.board)
+    if (emptyCells.length < count) {
+      return false
+    }
+
+    for (let i = 0; i < count; i++) {
+      const randomIndex = Math.floor(Math.random() * emptyCells.length)
+      const { row, col } = emptyCells.splice(randomIndex, 1)[0]
+      this.state.board[row][col].ball = getRandomColor()
+    }
+
+    return true
+  }
+
+  private generateNextBalls(): void {
+    this.state.nextBalls = Array.from({ length: BALLS_PER_TURN }, () => getRandomColor())
+  }
+
+  selectCell(row: number, col: number): boolean {
+    if (this.state.gameOver) return false
+
+    const cell = this.state.board[row][col]
+
+    if (cell.ball !== null) {
+      this.state.selectedCell = { row, col }
+      this.notify()
+      return true
+    }
+
+    if (this.state.selectedCell === null) {
+      return false
+    }
+
+    const from = this.state.selectedCell
+    const path = findPath(this.state.board, from, { row, col })
+
+    if (path === null) {
+      return false
+    }
+
+    const ball = this.state.board[from.row][from.col].ball
+    this.state.board[from.row][from.col].ball = null
+    this.state.board[row][col].ball = ball
+    this.state.selectedCell = null
+
+    const lines = checkLines(this.state.board, row, col)
+
+    if (lines.length > 0) {
+      this.processLines(lines)
+    } else {
+      if (!this.placeNextBalls()) {
+        this.state.gameOver = true
+      }
+    }
+
+    this.notify()
+    return true
+  }
+
+  private processLines(lines: LineInfo[]): void {
+    let totalScore = 0
+    let multiplier = 1
+
+    const sortedLines = [...lines].sort((a, b) => b.cells.length - a.cells.length)
+
+    for (const line of sortedLines) {
+      const baseScore = getLineScore(line.cells.length)
+      totalScore += Math.floor(baseScore * multiplier)
+      multiplier *= 1.5
+
+      for (const { row, col } of line.cells) {
+        this.state.board[row][col].ball = null
+      }
+    }
+
+    this.state.score += totalScore
+  }
+
+  private placeNextBalls(): boolean {
+    const emptyCells = getEmptyCells(this.state.board)
+
+    if (emptyCells.length < BALLS_PER_TURN) {
+      const ballsToPlace = Math.min(emptyCells.length, this.state.nextBalls.length)
+      if (ballsToPlace === 0) {
+        return false
+      }
+
+      for (let i = 0; i < ballsToPlace; i++) {
+        const randomIndex = Math.floor(Math.random() * emptyCells.length)
+        const { row, col } = emptyCells.splice(randomIndex, 1)[0]
+        this.state.board[row][col].ball = this.state.nextBalls[i]
+      }
+
+      this.generateNextBalls()
+      return emptyCells.length > 0
+    }
+
+    for (let i = 0; i < BALLS_PER_TURN; i++) {
+      const randomIndex = Math.floor(Math.random() * emptyCells.length)
+      const { row, col } = emptyCells.splice(randomIndex, 1)[0]
+      this.state.board[row][col].ball = this.state.nextBalls[i]
+    }
+
+    this.generateNextBalls()
+    return true
+  }
+}
diff --git a/src/game/LineChecker.ts b/src/game/LineChecker.ts
index 7594b7d..2ab3ea5 100644
--- a/src/game/LineChecker.ts
+++ b/src/game/LineChecker.ts
@@ -5,7 +5,8 @@
  * Проверка линий для ColorLine98
  */
 
-import { BOARD_SIZE, BallColor, MIN_LINE_LENGTH } from './Board'
+import { BOARD_SIZE, MIN_LINE_LENGTH } from './Board'
+import type { BallColor } from './Board'
 
 export interface LineInfo {
   cells: { row: number; col: number }[]
diff --git a/src/game/PathFinder.ts b/src/game/PathFinder.ts
index 1910cbb..393d7b8 100644
--- a/src/game/PathFinder.ts
+++ b/src/game/PathFinder.ts
@@ -5,7 +5,8 @@
  * Поиск пути (BFS) для ColorLine98
  */
 
-import { BOARD_SIZE, Board } from './Board'
+import { BOARD_SIZE } from './Board'
+import type { Board } from './Board'
 
 const DIRECTIONS = [
   [-1, 0],
diff --git a/src/game/index.ts b/src/game/index.ts
index 74f939f..0f28bd3 100644
--- a/src/game/index.ts
+++ b/src/game/index.ts
@@ -8,3 +8,4 @@
 export * from './Board'
 export * from './PathFinder'
 export * from './LineChecker'
+export * from './Game'