diff --git a/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabJsonLoader.java b/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabJsonLoader.java
index e263644..268273c 100644
--- a/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabJsonLoader.java
+++ b/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabJsonLoader.java
@@ -3,7 +3,7 @@ package ca.blarg.gdx.tilemap3d.json.prefabs;
 import ca.blarg.gdx.Strings;
 import ca.blarg.gdx.tilemap3d.json.tilemap.TileDataSerializer;
 import ca.blarg.gdx.tilemap3d.prefabs.TilePrefab;
-import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.assets.AssetManager;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.utils.Base64Coder;
 import com.badlogic.gdx.utils.Json;
@@ -11,48 +11,22 @@ import com.badlogic.gdx.utils.Json;
 import java.nio.ByteBuffer;
 
 public class TilePrefabJsonLoader {
-	public static TilePrefab load(String prefabFile) {
-		return load(Gdx.files.internal(prefabFile));
+	public static JsonTilePrefab load(FileHandle file) {
+		Json json = new Json();
+		return json.fromJson(JsonTilePrefab.class, file);
 	}
 
-	public static TilePrefab load(FileHandle prefabFile) {
-		if (prefabFile == null)
-			throw new IllegalArgumentException();
-
-		Json json = new Json();
-		JsonTilePrefab jsonPrefab = json.fromJson(JsonTilePrefab.class, prefabFile);
-
-		if (Strings.isNullOrEmpty(jsonPrefab.data))
+	public static TilePrefab create(JsonTilePrefab definition, AssetManager assetManager) {
+		if (Strings.isNullOrEmpty(definition.data))
 			throw new RuntimeException("Invalid prefab: no tile data.");
 
-		TilePrefab prefab = new TilePrefab(jsonPrefab.width, jsonPrefab.height, jsonPrefab.depth);
+		TilePrefab prefab = new TilePrefab(definition.width, definition.height, definition.depth);
 
-		byte[] dataBytes = Base64Coder.decode(jsonPrefab.data);
+		byte[] dataBytes = Base64Coder.decode(definition.data);
 		ByteBuffer buffer = ByteBuffer.wrap(dataBytes);
 
 		TileDataSerializer.deserialize(buffer, prefab);
 
 		return prefab;
 	}
-
-	public static void save(TilePrefab prefab, String outputFilename) {
-		if (prefab == null)
-			throw new IllegalArgumentException();
-
-		JsonTilePrefab jsonPrefab = new JsonTilePrefab();
-		jsonPrefab.width = prefab.getWidth();
-		jsonPrefab.height = prefab.getHeight();
-		jsonPrefab.depth = prefab.getDepth();
-
-		byte[] dataBytes = new byte[prefab.getData().length * TileDataSerializer.TILE_SIZE_BYTES];
-		ByteBuffer buffer = ByteBuffer.wrap(dataBytes);
-
-		TileDataSerializer.serialize(prefab, buffer);
-		jsonPrefab.data = new String(Base64Coder.encode(dataBytes));
-
-		Json json = new Json();
-		String output = json.prettyPrint(jsonPrefab);
-		FileHandle outputFile = Gdx.files.local(outputFilename);
-		outputFile.writeString(output, false);
-	}
 }
diff --git a/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabLoader.java b/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabLoader.java
index f067edd..32d089b 100644
--- a/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabLoader.java
+++ b/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabLoader.java
@@ -13,6 +13,7 @@ public class TilePrefabLoader extends AsynchronousAssetLoader<TilePrefab, TilePr
 	public static class TilePrefabParameter extends AssetLoaderParameters<TilePrefab> {
 	}
 
+	JsonTilePrefab definition;
 	TilePrefab prefab;
 
 	public TilePrefabLoader(FileHandleResolver resolver) {
@@ -21,12 +22,13 @@ public class TilePrefabLoader extends AsynchronousAssetLoader<TilePrefab, TilePr
 
 	@Override
 	public Array<AssetDescriptor> getDependencies(String fileName, FileHandle file, TilePrefabParameter parameter) {
+		definition = TilePrefabJsonLoader.load(file);
 		return null;
 	}
 
 	@Override
 	public void loadAsync(AssetManager manager, String fileName, FileHandle file, TilePrefabParameter parameter) {
-		prefab = TilePrefabJsonLoader.load(file);
+		prefab = TilePrefabJsonLoader.create(definition, manager);
 	}
 
 	@Override
diff --git a/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabSaver.java b/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabSaver.java
new file mode 100644
index 0000000..0c9f7d9
--- /dev/null
+++ b/src/main/java/ca/blarg/gdx/tilemap3d/json/prefabs/TilePrefabSaver.java
@@ -0,0 +1,33 @@
+package ca.blarg.gdx.tilemap3d.json.prefabs;
+
+import ca.blarg.gdx.tilemap3d.json.tilemap.TileDataSerializer;
+import ca.blarg.gdx.tilemap3d.prefabs.TilePrefab;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.files.FileHandle;
+import com.badlogic.gdx.utils.Base64Coder;
+import com.badlogic.gdx.utils.Json;
+
+import java.nio.ByteBuffer;
+
+public class TilePrefabSaver {
+	public static void save(TilePrefab prefab, String outputFilename) {
+		if (prefab == null)
+			throw new IllegalArgumentException();
+
+		JsonTilePrefab jsonPrefab = new JsonTilePrefab();
+		jsonPrefab.width = prefab.getWidth();
+		jsonPrefab.height = prefab.getHeight();
+		jsonPrefab.depth = prefab.getDepth();
+
+		byte[] dataBytes = new byte[prefab.getData().length * TileDataSerializer.TILE_SIZE_BYTES];
+		ByteBuffer buffer = ByteBuffer.wrap(dataBytes);
+
+		TileDataSerializer.serialize(prefab, buffer);
+		jsonPrefab.data = new String(Base64Coder.encode(dataBytes));
+
+		Json json = new Json();
+		String output = json.prettyPrint(jsonPrefab);
+		FileHandle outputFile = Gdx.files.local(outputFilename);
+		outputFile.writeString(output, false);
+	}
+}