diff --git a/CSharp/AdventOfCode/AdventOfCode/AdventOfCode.csproj b/CSharp/AdventOfCode/AdventOfCode/AdventOfCode.csproj
index 6f52aec..3e4d637 100644
--- a/CSharp/AdventOfCode/AdventOfCode/AdventOfCode.csproj
+++ b/CSharp/AdventOfCode/AdventOfCode/AdventOfCode.csproj
@@ -9,12 +9,16 @@
 
   <ItemGroup>
     <ProjectReference Include="..\DayOne\DayOne.csproj" />
+    <ProjectReference Include="..\DayTwo\DayTwo.csproj" />
   </ItemGroup>
 
   <ItemGroup>
     <None Update="RandomFiles\calibraciones.txt">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
+    <None Update="RandomFiles\cubes.txt">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
 
 </Project>
diff --git a/CSharp/AdventOfCode/AdventOfCode/Program.cs b/CSharp/AdventOfCode/AdventOfCode/Program.cs
index 4a689a5..e855c14 100644
--- a/CSharp/AdventOfCode/AdventOfCode/Program.cs
+++ b/CSharp/AdventOfCode/AdventOfCode/Program.cs
@@ -1,4 +1,5 @@
 using DayOne;
+using DayTwo;
 
 Console.WriteLine("Hello, World!");
 
@@ -7,4 +8,8 @@ Console.WriteLine("Hello, World!");
 
 //Console.WriteLine($"The calibration found was {calibrationFound}");
 
+var gameMaster = new CubeGameMaster(@"RandomFiles\cubes.txt");
+
+var sumOfIds = gameMaster.ObtainSumOfValidGames();
+Console.WriteLine($"Sum of the Ids is {sumOfIds}");
 Console.ReadLine();
\ No newline at end of file
diff --git a/CSharp/AdventOfCode/AdventOfCode/RandomFiles/cubes.txt b/CSharp/AdventOfCode/AdventOfCode/RandomFiles/cubes.txt
index e69de29..1cd7d33 100644
--- a/CSharp/AdventOfCode/AdventOfCode/RandomFiles/cubes.txt
+++ b/CSharp/AdventOfCode/AdventOfCode/RandomFiles/cubes.txt
@@ -0,0 +1,5 @@
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
\ No newline at end of file
diff --git a/CSharp/AdventOfCode/DayTwo/CubeGameMaster.cs b/CSharp/AdventOfCode/DayTwo/CubeGameMaster.cs
new file mode 100644
index 0000000..8154537
--- /dev/null
+++ b/CSharp/AdventOfCode/DayTwo/CubeGameMaster.cs
@@ -0,0 +1,26 @@
+namespace DayTwo;
+
+public class CubeGameMaster
+{
+    public string FilePath { get; set; }
+
+    public CubeGameMaster(string filePath)
+    {
+        FilePath = filePath;
+    }
+
+    public int ObtainSumOfValidGames()
+    {
+        using StreamReader reader = new StreamReader(FilePath);
+        var sumOfValidGames = 0;
+        while (!reader.EndOfStream)
+        {
+            // Read a line from the file
+            string line = reader.ReadLine() ?? "Something failed";
+            var game = new Game(line);
+
+            sumOfValidGames += game.GetIdIfValid();
+        }
+        return sumOfValidGames;
+    }
+}
\ No newline at end of file
diff --git a/CSharp/AdventOfCode/DayTwo/Game.cs b/CSharp/AdventOfCode/DayTwo/Game.cs
new file mode 100644
index 0000000..a00357b
--- /dev/null
+++ b/CSharp/AdventOfCode/DayTwo/Game.cs
@@ -0,0 +1,67 @@
+namespace DayTwo;
+
+public class Game
+{
+    public int Id { get; set; }
+    public ICollection<string> Steps { get; set; }
+
+    private const int BLUE = 14;
+    private const int RED = 12;
+    private const int GREEN = 13;
+
+    public Game(string line)
+    {
+        var headers = line.Split(':');
+
+        var id = headers[0].Split(' ')[1];
+
+        Id = int.Parse(id);
+
+        Steps = headers[1].Split(';');
+    }
+
+    public int GetIdIfValid()
+    {
+        if (IsGameValid())
+        {
+            return Id;
+        }
+        return 0;
+    }
+
+    private bool IsGameValid()
+    {
+        foreach (var step in Steps)
+        {
+            var colorDictionary = new Dictionary<string, int>();
+            var colorValues = step.Split(",");
+            foreach (var colorNumber in colorValues)
+            {
+                var separatedValues = colorNumber.Split(" ");
+                colorDictionary.Add(separatedValues[2], int.Parse(separatedValues[1]));
+            }
+            foreach (var colors in colorDictionary)
+            {
+                switch (colors.Key)
+                {
+                    case "red":
+                        if (colors.Value > RED) return false;
+                        break;
+
+                    case "green":
+                        if (colors.Value > GREEN) return false;
+                        break;
+
+                    case "blue":
+                        if (colors.Value > BLUE) return false;
+                        break;
+
+                    default:
+                        break;
+                }
+            }
+        }
+
+        return true;
+    }
+}
\ No newline at end of file