diff --git a/Database.cs b/Database.cs
new file mode 100644
index 0000000..c490060
--- /dev/null
+++ b/Database.cs
@@ -0,0 +1,44 @@
+using System.Text.Json;
+
+namespace MineSweeper
+{
+    internal class Database
+    {
+        private readonly string path;
+        private class PlayerData
+        {
+            public string name { get; set; }
+            public int wins { get; set; } = 0;
+            public int loses { get; set; } = 0;
+        }
+        private record Root(List<PlayerData> players);
+        private Root root;
+        public Database()
+        {
+            path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "MineSweeper by H1K0");
+            if (!Directory.Exists(path))
+                Directory.CreateDirectory(path);
+            path = Path.Combine(path, "db.json");
+            if (!File.Exists(path))
+                File.WriteAllText(path, "{\"players\":[]}");
+            root = JsonSerializer.Deserialize<Root>(File.ReadAllText(path));
+        }
+        public int PlayersCount() { return root.players.Count; }
+        public int FindPlayer(string name) { return root.players.FindIndex(p => p.name == name); }
+        public void AddPlayer(string name)
+        {
+            PlayerData newplayer = new();
+            newplayer.name = name;
+            root.players.Add(newplayer);
+        }
+        public int[] Stats(int playerId) { return new int[] { root.players[playerId].wins, root.players[playerId].loses }; }
+        public void AddGame(int playerId, bool win)
+        {
+            if (win)
+                root.players[playerId].wins++;
+            else
+                root.players[playerId].loses++;
+        }
+        public void Update() { File.WriteAllText(path, JsonSerializer.Serialize(root)); }
+    }
+}
diff --git a/Main.cs b/Main.cs
index 196c30c..0d975c4 100644
--- a/Main.cs
+++ b/Main.cs
@@ -5,17 +5,40 @@
         public static void Main(string[] args)
         {
             Game game;
+            Database database = new();
+            int PlayerId;
+            string PlayerName = "";
+            Console.WriteLine("(C) Masahiko AMANO a.k.a. H1K0, 2022\n\n" +
+                    "Hey! Let's play the MineSweeper game!\nPress any button for help or Enter to log in.");
+            while (Console.ReadKey(true).Key != ConsoleKey.Enter)
+                Console.WriteLine("\nThe game follows the classic rules.\n" +
+                    "Target cell coordinates are represented this way: A1, F5, I8. Case insensitive.\n" +
+                    "Type coordinates of the cell to open it or use prefixes: \"M\" to mark or \"U\" to unmark the cell.\n" +
+                    "For example: \"B9\", \"M D7\".\n" +
+                    "Press any button to see help again or just press Enter to start the game.");
             while (true)
             {
-                Console.WriteLine("(C) Masahiko AMANO a.k.a. H1K0, 2022\n\n" +
-                    "Hey! Let's play the MineSweeper game!\nType anything for help or just press Enter to start the game.");
-                while (Console.ReadLine().Length != 0)
-                    Console.WriteLine("\nThe game follows the classic rules.\n" +
-                        "Target cell coordinates are represented this way: A1, F5, I8. Case insensitive.\n" +
-                        "Type coordinates of the cell to open it or use prefixes: \"M\" to mark or \"U\" to unmark the cell.\n" +
-                        "For example: \"B9\", \"M D7\".\n" +
-                        "Type anything to see help again or just press Enter to start the game.\n");
-                Console.Write("Okay, let's go!\nEnter field width, height and number of mines separated with a space: ");
+                Console.Write("\nYour name: ");
+                PlayerName = Console.ReadLine();
+                PlayerId = database.FindPlayer(PlayerName);
+                if (PlayerId == -1 || PlayerName == "")
+                {
+                    Console.WriteLine("Could not find a player with the name \"" + PlayerName + "\". Press Enter to add new or any other button to re-enter.");
+                    if (Console.ReadKey(true).Key == ConsoleKey.Enter)
+                    {
+                        database.AddPlayer(PlayerName);
+                        PlayerId = database.PlayersCount() - 1;
+                        break;
+                    }
+                }
+                else
+                    break;
+            }
+            Console.WriteLine("You logged in as \"" + PlayerName + "\".\nYour stats:");
+            Console.WriteLine($"Wins: {database.Stats(PlayerId)[0]}\nLoses: {database.Stats(PlayerId)[1]}");
+            while (true)
+            {
+                Console.Write("\nOkay, let's play!\nEnter field width, height and number of mines separated with a space: ");
                 while (true)
                 {
                     try
@@ -35,6 +58,8 @@
                     Console.WriteLine("You win! Congratulations!");
                 else
                     Console.WriteLine("You lose!");
+                database.AddGame(PlayerId, result);
+                database.Update();
                 Console.WriteLine("Press Enter to play again or Escape to exit.");
                 ConsoleKey key;
                 bool exit = false;