diff --git a/spine-unity/Assets/Spine Examples/package.json b/spine-unity/Assets/Spine Examples/package.json
new file mode 100644
index 000000000..3924c88d6
--- /dev/null
+++ b/spine-unity/Assets/Spine Examples/package.json	
@@ -0,0 +1,20 @@
+{
+	"name": "com.esotericsoftware.spine.spine-unity-examples",
+	"displayName": "spine-unity Runtime Examples",
+	"description": "This plugin provides example scenes and scripts for the spine-unity runtime.",
+	"version": "3.8.0",
+	"unity": "2018.3",
+	"author": {
+		"name": "Esoteric Software",
+		"email": "contact@esotericsoftware.com",
+		"url": "http://esotericsoftware.com/"
+	},
+	"dependencies": {
+		"com.esotericsoftware.spine.spine-unity": "3.8.0"
+	},
+	"keywords": [
+		"spine",
+		"spine-unity",
+		"core"
+	]
+}
diff --git a/spine-unity/Assets/Spine Examples/package.json.meta b/spine-unity/Assets/Spine Examples/package.json.meta
new file mode 100644
index 000000000..9c5cdb952
--- /dev/null
+++ b/spine-unity/Assets/Spine Examples/package.json.meta	
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 3344f01d63135c94e81d853f56d6c4e5
+PackageManifestImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/spine-unity/Assets/Spine Examples/spine-unity-examples.asmdef b/spine-unity/Assets/Spine Examples/spine-unity-examples.asmdef
new file mode 100644
index 000000000..646178423
--- /dev/null
+++ b/spine-unity/Assets/Spine Examples/spine-unity-examples.asmdef	
@@ -0,0 +1,4 @@
+{
+	"name": "spine-unity-examples",
+	"references": [ "spine-unity" ]
+}
diff --git a/spine-unity/Assets/Spine Examples/spine-unity-examples.asmdef.meta b/spine-unity/Assets/Spine Examples/spine-unity-examples.asmdef.meta
new file mode 100644
index 000000000..f8dc4a556
--- /dev/null
+++ b/spine-unity/Assets/Spine Examples/spine-unity-examples.asmdef.meta	
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 8f5163e4753269348a069fd2fedcba29
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/SkeletonDataCompatibility.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/SkeletonDataCompatibility.cs
index 3ce03b128..db9605dc2 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/SkeletonDataCompatibility.cs	
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Asset Types/SkeletonDataCompatibility.cs	
@@ -30,7 +30,10 @@
 using System.Collections.Generic;
 using System.IO;
 using UnityEngine;
+#if UNITY_EDITOR
 using System.Globalization;
+using System.Text.RegularExpressions;
+#endif
 
 namespace Spine.Unity {
 
@@ -41,6 +44,7 @@ namespace Spine.Unity {
 		static readonly int[][] compatibleJsonVersions = { new[] { 3, 9, 0 }, new[] { 3, 8, 0 } };
 
 		static bool wasVersionDialogShown = false;
+		static readonly Regex jsonVersionRegex = new Regex(@"""spine""\s*:\s*""([^""]+)""", RegexOptions.CultureInvariant);
 	#endif
 
 		public enum SourceType {
@@ -92,23 +96,29 @@ namespace Spine.Unity {
 				}
 			}
 			else {
-				object obj = Json.Deserialize(new StringReader(asset.text));
-				if (obj == null) {
-					Debug.LogErrorFormat("'{0}' is not valid JSON.", asset.name);
-					return null;
+				Match match = jsonVersionRegex.Match(asset.text);
+				if (match != null) {
+					fileVersion.rawVersion = match.Groups[1].Value;
 				}
+				else {
+					object obj = Json.Deserialize(new StringReader(asset.text));
+					if (obj == null) {
+						Debug.LogErrorFormat("'{0}' is not valid JSON.", asset.name);
+						return null;
+					}
 
-				var root = obj as Dictionary<string, object>;
-				if (root == null) {
-					Debug.LogErrorFormat("'{0}' is not compatible JSON. Parser returned an incorrect type while parsing version info.", asset.name);
-					return null;
-				}
+					var root = obj as Dictionary<string, object>;
+					if (root == null) {
+						Debug.LogErrorFormat("'{0}' is not compatible JSON. Parser returned an incorrect type while parsing version info.", asset.name);
+						return null;
+					}
 
-				if (root.ContainsKey("skeleton")) {
-					var skeletonInfo = (Dictionary<string, object>)root["skeleton"];
-					object jv;
-					skeletonInfo.TryGetValue("spine", out jv);
-					fileVersion.rawVersion = jv as string;
+					if (root.ContainsKey("skeleton")) {
+						var skeletonInfo = (Dictionary<string, object>)root["skeleton"];
+						object jv;
+						skeletonInfo.TryGetValue("spine", out jv);
+						fileVersion.rawVersion = jv as string;
+					}
 				}
 			}
 
diff --git a/spine-unity/Assets/Spine/package.json b/spine-unity/Assets/Spine/package.json
new file mode 100644
index 000000000..6fac1264d
--- /dev/null
+++ b/spine-unity/Assets/Spine/package.json
@@ -0,0 +1,19 @@
+{
+	"name": "com.esotericsoftware.spine.spine-unity",
+	"displayName": "spine-unity Runtime",
+	"description": "This plugin provides the spine-unity runtime core.",
+	"version": "3.8.0",
+	"unity": "2018.3",
+	"author": {
+		"name": "Esoteric Software",
+		"email": "contact@esotericsoftware.com",
+		"url": "http://esotericsoftware.com/"
+	},
+	"dependencies": {
+	},
+	"keywords": [
+		"spine",
+		"spine-unity",
+		"core"
+	]
+}
diff --git a/spine-unity/Assets/Spine/package.json.meta b/spine-unity/Assets/Spine/package.json.meta
new file mode 100644
index 000000000..d0000ccae
--- /dev/null
+++ b/spine-unity/Assets/Spine/package.json.meta
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 09478c42aa0375347898d942d287a819
+PackageManifestImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: