diff --git a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/EggCreatorTests.cs b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/EggCreatorTests.cs
new file mode 100644
index 0000000..32e831d
--- /dev/null
+++ b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/EggCreatorTests.cs
@@ -0,0 +1,29 @@
+using pkhexEgglocke;
+using pkhexEgglockeTests;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace pkhexEgglockeTests
+{
+    [TestClass]
+    public class EggCreatorTests
+    {
+        [TestMethod]
+        public void TestDecoder()
+        {
+            SaveWriter sw = new SaveWriter(testConstants.JOHTO_PLUS_SOUL_SILVER_SAVE);
+
+            EggCreator ec = EggCreator.decodeJSON(testConstants.BLANK_GEN4_MAREEP_VALID);
+
+            sw.addEgg(ec, 1);
+
+            sw.export("testPROG.sav");
+        
+        }
+
+
+    }
+}
diff --git a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/SaveWriterTest.cs b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/SaveWriterTest.cs
index fb602c9..d095656 100644
--- a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/SaveWriterTest.cs
+++ b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/SaveWriterTest.cs
@@ -12,7 +12,7 @@ public class SaveWriterTest
         public void TestSaveImportConstructorDoesNotCrashOnValidFile()
         {
 
-            SaveWriter sw = new SaveWriter(testConstants.BLANK_SOULSILVER_SAVE);
+            SaveWriter sw = new SaveWriter(testConstants.JOHTO_PLUS_SOUL_SILVER_SAVE);
 
         }
 
@@ -30,7 +30,7 @@ public void TestSaveExportConstructorCrashesOnInvalidFile()
         public void TestSaveImportOTMatches()
         {
             string expectedOT = testConstants.BLANK_SOULSILVER_OT_STRING;
-            SaveWriter sw = new SaveWriter(testConstants.BLANK_SOULSILVER_SAVE);
+            SaveWriter sw = new SaveWriter(testConstants.JOHTO_PLUS_SOUL_SILVER_SAVE);
             string actualOT = sw.getOTString();
 
             Assert.AreEqual(expectedOT, actualOT);
@@ -42,7 +42,7 @@ public void TestSaveImportOTMatches()
         public void TestSaveImportVersionMatches()
         {
             string expectedOT = testConstants.BLANK_SOULSILVER_OT_STRING;
-            SaveWriter sw = new SaveWriter(testConstants.BLANK_SOULSILVER_SAVE);
+            SaveWriter sw = new SaveWriter(testConstants.JOHTO_PLUS_SOUL_SILVER_SAVE);
             string actualOT = sw.getOTString();
 
             Assert.AreEqual(expectedOT, actualOT);
diff --git a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/pkhexEgglockeTests.csproj b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/pkhexEgglockeTests.csproj
index 9adefdf..0d0b4a2 100644
--- a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/pkhexEgglockeTests.csproj
+++ b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/pkhexEgglockeTests.csproj
@@ -33,6 +33,9 @@
     <None Update="testSources\emptySoulSilver.sav">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
+    <None Update="testSources\Mareep.json">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
 
 </Project>
diff --git a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/testConstants.cs b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/testConstants.cs
index 78f0ee9..38c06fb 100644
--- a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/testConstants.cs
+++ b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/testConstants.cs
@@ -10,13 +10,18 @@ namespace pkhexEgglockeTests
     public static class testConstants
     {
         // Gen 4 - Soul Silver Blank Save File
-        public static string BLANK_SOULSILVER_SAVE => Path.Combine(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), @"testSources"), "emptySoulSilver.sav");
+        public static string JOHTO_PLUS_SOUL_SILVER_SAVE => Path.Combine(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), @"testSources"), "emptySoulSilver.sav");
         public static string BLANK_SOULSILVER_OT_STRING => "Egg";
 
+        // Gen 4 - Blank JSON
+        public static string BLANK_GEN4_MAREEP_VALID => Path.Combine(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), @"testSources"), "Mareep.json");
 
         // Gen 6 - Omega Ruby Save File
         public static string BLANK_OMEGARUBY_SAVE => Path.Combine(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), @"testSources"), "emptyOmegaRuby.sav");
 
 
+        
+
+
     }
 }
diff --git a/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/testSources/Mareep.json b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/testSources/Mareep.json
new file mode 100644
index 0000000..7500fb5
--- /dev/null
+++ b/pkhex/pkhex-egglocke-tests/pkhex-egglocke-tests/testSources/Mareep.json
@@ -0,0 +1,15 @@
+{
+  "dexNumber": 179,
+  "ball": 2,
+  "language": 1,
+  "ability":9,
+  "nature": 1,
+  "OT": "Dawn",
+  "OTGender": 1,
+  "nickname": "WLW",
+  "IV": [ 31, 31, 31, 31, 31, 31 ],
+  "EV": [ 0, 0, 0, 0, 0, 0 ],
+  "moves": [ 425, 262 ],
+  "movespp": [ 30, 40 ]
+
+}
\ No newline at end of file
diff --git a/pkhex/pkhex-egglocke/pkhex-egglocke/EggCreator.cs b/pkhex/pkhex-egglocke/pkhex-egglocke/EggCreator.cs
new file mode 100644
index 0000000..5e564d5
--- /dev/null
+++ b/pkhex/pkhex-egglocke/pkhex-egglocke/EggCreator.cs
@@ -0,0 +1,137 @@
+/* PokemonCreator.cs
+*  Bridge class that creates PkHEX pokemon files based on JSON objects exported from web app.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using PKHeX.Core;
+using Newtonsoft.Json;
+using System.Text.RegularExpressions;
+
+namespace pkhexEgglocke
+{
+    /// <summary>
+    /// PokemonCreator: Pokemon data class that decodes JSON pokemon descriptors and 
+    /// </summary>
+    /// 
+
+    // Parameters
+    // These parameters mostly allow you to set rules around what user submissions you'd like to include (ex. allow user-supplied IVs)
+    
+
+    internal class EggCreator
+    {
+
+        protected bool allowUserIVs => true;
+        protected bool allowUserShiny => true;
+        protected bool allowUser => true;
+
+        // Egg Parameters that are always true
+        public bool IsEgg = true;
+        public ushort EggLocationDP = Locations.Daycare4;
+        public byte MetLevel = 0;
+
+        //Other constant fields
+        public int language = (int)LanguageID.English;
+
+
+        // Mutable fields
+        public byte ball = (int)Ball.Dive;
+
+        public ushort dexNumber = 1;
+        public int Language = 1;
+        public int Ability = 2;
+        public Nature Nature = Nature.Adamant;
+
+
+
+        //Misc creator stuff
+        public string OT = "Default";
+        public byte OTGender = (int)Gender.Female;
+        public string nickname = "Hello";
+
+        public int[] IV = [31, 31, 31, 31, 31, 31];
+        public int[] EV = [0, 0, 0, 0, 0, 0];
+
+        public ushort [] moves = {425, 262};
+        public ushort[] movespp = { 30, 40 };
+
+
+        public EggCreator(byte ball, ushort dexNumber, int language, int ability, Nature Nature, string OT, byte OTGender, string nickname, int[] IV, int[] EV, ushort[]  moves, ushort[] movespp) { 
+            
+            this.ball = ball;
+            this.dexNumber = dexNumber;
+            this.language = language;
+            this.Ability = ability;
+            this.Nature = Nature;
+            this.OT = OT;
+            this.OTGender = OTGender;
+            this.nickname = nickname;
+            this.IV = IV;
+            this.EV = EV;
+            this.moves = moves;
+            this.movespp = movespp;
+
+
+        }
+
+
+        public static EggCreator decodeJSON(string filepath) {
+            string json = File.ReadAllText(filepath);
+
+            dynamic newObject = JsonConvert.DeserializeObject(json);
+
+            Nature nature = lookupNatureInt((int) newObject.nature.Value);
+
+            int[] IV = newObject.IV.ToObject<int[]>();
+            int[] EV = newObject.EV.ToObject<int[]>();
+
+            int[] moves = newObject.moves.ToObject<int[]>();
+            int[] movespp = newObject.movespp.ToObject<int[]>();
+
+            return new EggCreator(
+                newObject.ball,
+                newObject.dexNumber,
+                newObject.language,
+                newObject.ability,
+                nature,
+                newObject.OT,
+                newObject.OTGender,
+                newObject.nickname,
+                IV,
+                EV,
+                convertIntArrayViaCast(moves),
+                convertIntArrayViaCast(movespp)
+
+                );
+           
+        }
+
+        public static Nature lookupNatureInt(int nature)
+        {
+            if (nature == 1) {
+                return Nature.Adamant;
+            }
+
+            return Nature.Bashful;
+        }
+
+        public static ushort[] convertIntArrayViaCast(int[] array)
+        {
+
+            ushort[] result = new ushort[array.Length];
+
+            for (int i = 0; i < result.Length; i++)
+            {
+                result[i] = (ushort) array[i];
+            }
+
+            return result;
+        }
+
+
+    }
+}
diff --git a/pkhex/pkhex-egglocke/pkhex-egglocke/JSONDecoder.cs b/pkhex/pkhex-egglocke/pkhex-egglocke/JSONDecoder.cs
new file mode 100644
index 0000000..0e8230e
--- /dev/null
+++ b/pkhex/pkhex-egglocke/pkhex-egglocke/JSONDecoder.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace pkhex_egglocke
+{
+    internal class JSONDecoder
+    {
+
+        // Very annoying code that decodes strings to class-defined integers
+
+    }
+}
diff --git a/pkhex/pkhex-egglocke/pkhex-egglocke/PokemonCreator.cs b/pkhex/pkhex-egglocke/pkhex-egglocke/PokemonCreator.cs
deleted file mode 100644
index aeec6e8..0000000
--- a/pkhex/pkhex-egglocke/pkhex-egglocke/PokemonCreator.cs
+++ /dev/null
@@ -1,20 +0,0 @@
-/* PokemonCreator.cs
-*  Bridge class that creates PkHEX pokemon files based on JSON objects exported from web app.
-*/
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using PKHeX.Core;
-
-namespace pkhexEgglocke
-{
-    internal class PokemonCreator
-    {
-       
-
-
-    }
-}
diff --git a/pkhex/pkhex-egglocke/pkhex-egglocke/Program.cs b/pkhex/pkhex-egglocke/pkhex-egglocke/Program.cs
index e1e8e44..0fb64b0 100644
--- a/pkhex/pkhex-egglocke/pkhex-egglocke/Program.cs
+++ b/pkhex/pkhex-egglocke/pkhex-egglocke/Program.cs
@@ -1,12 +1,35 @@
 // See https://aka.ms/new-console-template for more information
 
 
+using pkhexEgglocke;
+using System.Reflection;
+
 class Program {
 
     public static void Main(string[] args)
     {
 
-        Console.WriteLine("Hello World!");
+        var BLANK_SOULSILVER_SAVE = @"C:\Users\Evin Jaff\Downloads\johtocomplete.sav";
+
+        SaveWriter sw = new SaveWriter(BLANK_SOULSILVER_SAVE);
+
+        //EggCreator pc = new EggCreator();
+
+        //sw.addEgg(pc, 1);
+
+        // Output the new one 
+        //sw.export("testPROG.sav");
+
+        //Console.WriteLine("Dumped to testPROG.sav!!");
+        var BLANK_GEN4_MAREEP_VALID = Path.Combine("C:\\Users\\Evin Jaff\\Documents\\egglocke-maker\\pkhex\\pkhex-egglocke-tests\\pkhex-egglocke-tests\\testSources", "Mareep.json");
+
+        EggCreator ec = EggCreator.decodeJSON(BLANK_GEN4_MAREEP_VALID);
+
+        sw.addEgg(ec, 1);
+
+        sw.export("testPROG.sav");
+
+        Console.WriteLine("Dumped testPROG");
 
     }
 
diff --git a/pkhex/pkhex-egglocke/pkhex-egglocke/SaveWriter.cs b/pkhex/pkhex-egglocke/pkhex-egglocke/SaveWriter.cs
index 4723b50..389957a 100644
--- a/pkhex/pkhex-egglocke/pkhex-egglocke/SaveWriter.cs
+++ b/pkhex/pkhex-egglocke/pkhex-egglocke/SaveWriter.cs
@@ -51,9 +51,74 @@ public SaveWriter(string savePath) {
 
         }
 
+        public void addEgg( EggCreator pokemon, int boxIndex) {
+
+            // hacky start - hardcoded to box 1
+
+            var mew = new PK4();
+
+            // Standard Egg attributes
+            mew.IsEgg = pokemon.IsEgg;
+            mew.EggLocationDP = pokemon.EggLocationDP;
+            mew.MetLevel = pokemon.MetLevel;
+            mew.Ball = pokemon.ball;
+
+
+            // Pokemon Info
+            mew.Species = pokemon.dexNumber;
+            mew.Nickname = pokemon.nickname;
+            mew.Language = pokemon.language;
+            mew.OriginalTrainerName = pokemon.OT;
+            mew.OriginalTrainerGender = pokemon.OTGender;
+
+
+            mew.Ability = pokemon.Ability;
+            mew.Nature = pokemon.Nature;
+
+            // Moveset
+            mew.Move1 = (int)Move.ShadowSneak;
+            mew.Move1_PP = 30;
+            mew.Move2 = (int)Move.Memento;
+            mew.Move2_PP = 20;
+
+
+            mew.IVs = pokemon.IV;
+
+            var box = this.currentSave.BoxData;
+
+            // Check legality of the pokemon
+
+            LegalityAnalysis legalitychecker = new LegalityAnalysis(mew);
+
+            #if DEBUG
+            if (legalitychecker.Valid)
+            {
+                Console.WriteLine("Legal Egg created!");
+            }
+            else {
+                Console.WriteLine("Illegal Egg Created!");
+            }
+            #endif
+
+            box[boxIndex] = mew;
+
+
+            // update box
+            this.currentSave.BoxData = box;
+
+            // this.currentSave.AddBoxData( , 1, 1 );
+
+            
+        }
+
+
+        public void export(string location) {
+            
+            byte[] modifiedSaveData = this.currentSave.Write();
+        
+            // dump to location
+            File.WriteAllBytes(location, modifiedSaveData);
 
-        public void export() {
-            Console.WriteLine("To be Implemented!");
         }
 
 
diff --git a/pkhex/pkhex-egglocke/pkhex-egglocke/pkhexEgglocke.csproj b/pkhex/pkhex-egglocke/pkhex-egglocke/pkhexEgglocke.csproj
index 42b34a5..d76cacf 100644
--- a/pkhex/pkhex-egglocke/pkhex-egglocke/pkhexEgglocke.csproj
+++ b/pkhex/pkhex-egglocke/pkhex-egglocke/pkhexEgglocke.csproj
@@ -9,6 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="PKHeX.Core" Version="24.5.5" />
   </ItemGroup>