diff --git a/DesktopGL/DesktopGL.csproj b/DesktopGL/DesktopGL.csproj
index 471b6a0..678f1e2 100644
--- a/DesktopGL/DesktopGL.csproj
+++ b/DesktopGL/DesktopGL.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <PublishReadyToRun>false</PublishReadyToRun>
     <TieredCompilation>false</TieredCompilation>
   </PropertyGroup>
@@ -28,5 +28,8 @@
     <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.0.1641" />
     <PackageReference Include="System.Text.Json" Version="5.0.2" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Newtonsoft.Json\Src\Newtonsoft.Json\Newtonsoft.Json.csproj" />
+  </ItemGroup>
   <Import Project="..\Shared\Shared.projitems" Label="Shared" />
 </Project>
diff --git a/Shared/SneakWorld.cs b/Shared/SneakWorld.cs
index fa6b814..63d948c 100644
--- a/Shared/SneakWorld.cs
+++ b/Shared/SneakWorld.cs
@@ -1,8 +1,8 @@
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
+using Newtonsoft.Json.Linq;
 using System;
 using System.Collections.Generic;
-using System.Text.Json;
 
 namespace SemiColinGames {
 
@@ -14,7 +14,7 @@ namespace SemiColinGames {
     private readonly Tile[] obstacles;
     private readonly Tile[] decorations;
     // Kept around for resetting the world's entities after player death or level restart.
-    private readonly JsonElement entitiesLayer;
+    private readonly JToken entitiesLayer;
     private NPC[] npcs;
 
     public Player Player { get; private set; }
@@ -31,17 +31,17 @@ namespace SemiColinGames {
       Camera = new Camera();
       LinesOfSight = new LinesOfSight(graphics);
 
-      JsonElement jsonRoot = JsonDocument.Parse(json).RootElement;
-      Width = jsonRoot.GetProperty("width").GetInt32();
-      Height = jsonRoot.GetProperty("height").GetInt32();
+      JObject root = JObject.Parse(json);
+      Width = root.SelectToken("width").Value<int>();
+      Height = root.SelectToken("height").Value<int>();
 
       List<Tile> hazardTiles = new List<Tile>();
       List<Tile> obstacleTiles = new List<Tile>();
       List<Tile> obstacleTiles8 = new List<Tile>();
       List<Tile> decorationTiles = new List<Tile>();
       List<Tile> backgroundTiles = new List<Tile>();
-      foreach (JsonElement layer in jsonRoot.GetProperty("layers").EnumerateArray()) {
-        string layerName = layer.GetProperty("name").GetString();
+      foreach (JToken layer in root.SelectToken("layers").Children()) {
+        string layerName = layer.SelectToken("name").Value<string>();
         if (layerName == "entities") {
           entitiesLayer = layer;
           (Player, npcs) = ParseEntities(layer);
@@ -99,22 +99,21 @@ namespace SemiColinGames {
       GC.SuppressFinalize(this);
     }
 
-    private List<Tile> ParseLayer(JsonElement layer) {
-      string layerName = layer.GetProperty("name").GetString();
+    private List<Tile> ParseLayer(JToken layer) {
+      string layerName = layer.SelectToken("name").Value<string>();
 
       var tileList = new List<Tile>();
 
-      int layerWidth = layer.GetProperty("gridCellsX").GetInt32();
-      int layerHeight = layer.GetProperty("gridCellsY").GetInt32();
+      int layerWidth = layer.SelectToken("gridCellsX").Value<int>();
+      int layerHeight = layer.SelectToken("gridCellsY").Value<int>();
       gridWidth = Math.Max(gridWidth, layerWidth);
       gridHeight = Math.Max(gridHeight, layerHeight);
 
       int dataIndex = -1;
-      int tileWidth = layer.GetProperty("gridCellWidth").GetInt32();
-      int tileHeight = layer.GetProperty("gridCellHeight").GetInt32();
+      int tileWidth = layer.SelectToken("gridCellWidth").Value<int>();
+      int tileHeight = layer.SelectToken("gridCellHeight").Value<int>();
       int textureWidth = Textures.Grassland.Get.Width / tileWidth;
-      foreach (JsonElement textureIndexElement in layer.GetProperty("data").EnumerateArray()) {
-        int textureIndex = textureIndexElement.GetInt32();
+      foreach (int textureIndex in layer.SelectToken("data").Values<int>()) {
         dataIndex++;
         if (textureIndex == -1) {
           continue;
@@ -134,14 +133,14 @@ namespace SemiColinGames {
       return tileList;
     }
 
-    private (Player, NPC[]) ParseEntities(JsonElement layer) {
+    private (Player, NPC[]) ParseEntities(JToken layer) {
       Player player = null;
       List<NPC> npcs = new List<NPC>();
-      foreach (JsonElement entity in layer.GetProperty("entities").EnumerateArray()) {
-        string name = entity.GetProperty("name").GetString();
-        int x = entity.GetProperty("x").GetInt32();
-        int y = entity.GetProperty("y").GetInt32();
-        int facing = entity.GetProperty("flippedX").GetBoolean() ? -1 : 1;
+      foreach (JToken entity in layer.SelectToken("entities").Children()) {
+        string name = entity.SelectToken("name").Value<string>();
+        int x = entity.SelectToken("x").Value<int>();
+        int y = entity.SelectToken("y").Value<int>();
+        int facing = entity.SelectToken("flippedX").Value<bool>() ? -1 : 1;
         if (name == "player") {
           player = new Player(new Vector2(x, y), facing);
         } else if (name == "executioner") {
diff --git a/Shared/Sprites.cs b/Shared/Sprites.cs
index f59605c..04b0f29 100644
--- a/Shared/Sprites.cs
+++ b/Shared/Sprites.cs
@@ -1,7 +1,7 @@
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Content;
+using Newtonsoft.Json.Linq;
 using System.Collections.Generic;
-using System.Text.Json;
 
 namespace SemiColinGames {
   public static class Sprites {
@@ -61,32 +61,29 @@ namespace SemiColinGames {
       Texture = texture;
       animations = new Dictionary<string, SpriteAnimation>();
 
-      JsonElement jsonRoot = JsonDocument.Parse(metadataJson).RootElement;
+      JObject json = JObject.Parse(metadataJson);
 
       frames = new List<Frame>();
-      foreach (JsonElement child in jsonRoot.GetProperty("frames").EnumerateArray()) {
-        JsonElement frame = child.GetProperty("frame");
+      foreach (JToken child in json.SelectToken("frames").Children()) {
         Rectangle source = new Rectangle(
-            frame.GetProperty("x").GetInt32(),
-            frame.GetProperty("y").GetInt32(),
-            frame.GetProperty("w").GetInt32(),
-            frame.GetProperty("h").GetInt32());
-
-        double duration = child.GetProperty("duration").GetDouble() / 1000;
+            child.SelectToken("frame.x").Value<int>(),
+            child.SelectToken("frame.y").Value<int>(),
+            child.SelectToken("frame.w").Value<int>(),
+            child.SelectToken("frame.h").Value<int>());
+        double duration = child.SelectToken("duration").Value<double>() / 1000;
         frames.Add(new Frame(source, duration));
       }
-
       // We assume that all frames are the same size (which right now is assured by the
       // Aseprite-based spritesheet export process).
       Width = frames[0].Source.Width;
       Height = frames[0].Source.Height;
 
-      JsonElement frameTags = jsonRoot.GetProperty("meta").GetProperty("frameTags");
-      foreach (JsonElement child in frameTags.EnumerateArray()) {
-        string name = child.GetProperty("name").GetString();
-        int start = child.GetProperty("from").GetInt32();
-        int end = child.GetProperty("to").GetInt32();
-        string directionString = child.GetProperty("direction").GetString();
+      JToken frameTags = json.SelectToken("meta.frameTags");
+      foreach (JToken child in frameTags.Children()) {
+        string name = child.SelectToken("name").Value<string>();
+        int start = child.SelectToken("from").Value<int>();
+        int end = child.SelectToken("to").Value<int>();
+        string directionString = child.SelectToken("direction").Value<string>();
         AnimationDirection direction = directionString == "pingpong" ?
             AnimationDirection.PingPong : AnimationDirection.Forward;
         double duration = 0;
diff --git a/Sneak.sln b/Sneak.sln
index aaa8289..dbff81e 100644
--- a/Sneak.sln
+++ b/Sneak.sln
@@ -18,6 +18,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		.editorconfig = .editorconfig
 	EndProjectSection
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Newtonsoft.Json", "..\Newtonsoft.Json\Src\Newtonsoft.Json\Newtonsoft.Json.csproj", "{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}"
+EndProject
 Global
 	GlobalSection(SharedMSBuildProjectFiles) = preSolution
 		Shared\Shared.projitems*{21570905-5ffd-49fc-b523-1e7e6f191142}*SharedItemsImports = 4
@@ -117,6 +119,26 @@ Global
 		{C86694A5-DD99-4421-AA2C-1230F11C10F8}.Release|x64.Build.0 = Release|Any CPU
 		{C86694A5-DD99-4421-AA2C-1230F11C10F8}.Release|x86.ActiveCfg = Release|Any CPU
 		{C86694A5-DD99-4421-AA2C-1230F11C10F8}.Release|x86.Build.0 = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|ARM.Build.0 = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|ARM64.ActiveCfg = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|ARM64.Build.0 = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|x64.Build.0 = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Debug|x86.Build.0 = Debug|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|ARM.ActiveCfg = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|ARM.Build.0 = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|ARM64.ActiveCfg = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|ARM64.Build.0 = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|x64.ActiveCfg = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|x64.Build.0 = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|x86.ActiveCfg = Release|Any CPU
+		{A4BB5AB0-821E-42C9-9F77-0EF7F737B9D1}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/UWP/UWP.csproj b/UWP/UWP.csproj
index f459e74..17a5286 100644
--- a/UWP/UWP.csproj
+++ b/UWP/UWP.csproj
@@ -156,7 +156,10 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
-      <Version>6.2.10</Version>
+      <Version>6.2.12</Version>
+    </PackageReference>
+    <PackageReference Include="Newtonsoft.Json">
+      <Version>13.0.1</Version>
     </PackageReference>
     <PackageReference Include="SharpDX">
       <Version>4.2.0</Version>
@@ -176,9 +179,6 @@
     <PackageReference Include="SharpDX.XAudio2">
       <Version>4.2.0</Version>
     </PackageReference>
-    <PackageReference Include="System.Text.Json">
-      <Version>5.0.2</Version>
-    </PackageReference>
   </ItemGroup>
   <Import Project="..\Shared\Shared.projitems" Label="Shared" />
   <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">