看到聊天室有人在問，所以試寫了一個看看當作練習，用目前自己能力所及的方式完成，如果有更好的建議也請各位多批評指教！

Person類別(玩家)

建立玩家時需先提供姓名與金錢

    internal class Person
    {
        public Person(string name,int money)
        {
            Name = name;
            Money = money;
        }

        public string Name { get; set; }
        public int Money { get; set; }
        public string Guess { get; set; }
        public int WinCount { get; set; }
        public int LoseCount { get; set; }
    }

Game類別(含遊戲設定、玩家)

Bet: 賭注金額
RoundCount: 猜測進行輪數

    internal class Game
    {
        public int Bet { get; set; }
        public int RoundCount { get; set; }
        public Person Player1 { get; set; }
        public Person Player2 { get; set; }
    }

ThrowCoinService類別(包含 擲硬幣 與 遊戲開始方法)

使用random物件隨機產生數字1 or 2，分別代表正與反

    internal static class ThrowCoinService
    {
        public static string GetThrowCoinResult()
        {
            var result = string.Empty;
            Random random = new Random(DateTime.Now.Millisecond);
            var num = random.Next(1, 3);
            if (num == 1) result = "正";
            else if (num == 2) result = "反";
            else result = "Error";
            return result;
        }

        public static void GameStart(Game game)
        {
            //當任一方錢歸零時才結束
            while (!(game.Player1.Money == 0 || game.Player2.Money == 0))
            {
                //執行丟硬幣
                var throwResult = ThrowCoinService.GetThrowCoinResult();

                //判斷與紀錄
                if (throwResult == "Error")
                {
                    Console.WriteLine("Error");
                    break;
                }
                if (throwResult == game.Player1.Guess)
                {
                    game.Player1.Money += game.Bet;
                    game.Player1.WinCount++;
                }
                else
                {
                    game.Player1.Money -= game.Bet;
                    game.Player1.LoseCount++;
                }

                if (throwResult == game.Player2.Guess)
                {
                    game.Player2.Money += game.Bet;
                    game.Player2.WinCount++;
                }
                else
                {
                    game.Player2.Money -= game.Bet;
                    game.Player2.LoseCount++;
                }
                game.RoundCount++;

                //輸出結果
                LogService.WriteLog(game, throwResult);
            }
        }
    }

LogService類別(輸出每輪遊戲結果)

    internal static class LogService
    {
        public static void WriteLog(Game game,string throwResult)
        {
            Console.WriteLine($"第{game.RoundCount}次比賽，投擲結果為\"{throwResult}\":");
            Console.WriteLine($"{game.Player1.Name}--勝:{game.Player1.WinCount} 敗:{game.Player1.LoseCount} 剩餘金額:{game.Player1.Money}");
            Console.WriteLine($"{game.Player2.Name}--勝:{game.Player2.WinCount} 敗:{game.Player2.LoseCount} 剩餘金額:{game.Player2.Money}");
            Console.WriteLine($"----------------------------------");
        }
    }

主程式

這邊將猜正反簡單化，讓2人固定分別猜正與反。
金額10元就好，比較快結束。

    internal class Program
    {
        static void Main(string[] args)
        {
            //玩家
            Person A = new Person("Amy", 10);
            Person B = new Person("Bob", 10);

            //雙方選擇正or反
            A.Guess = "正";
            B.Guess = "反";

            Game game = new Game
            {
                //賭注金額
                Bet = 1,

                //遊戲次數
                RoundCount = 0,

                Player1 = A,
                Player2 = B
            };

            ThrowCoinService.GameStart(game);
            Console.ReadLine();
        }
    }

輸出結果示範