diff --git a/.idea/runConfigurations/COF_Finder.xml b/.idea/runConfigurations/COF_Finder.xml
new file mode 100644
index 00000000..57c85f9e
--- /dev/null
+++ b/.idea/runConfigurations/COF_Finder.xml
@@ -0,0 +1,10 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="COF Finder" type="Application" factoryName="Application" folderName="tools" singleton="true">
+    <option name="MAIN_CLASS_NAME" value="com.riiablo.codec.CofFinder" />
+    <module name="tools" />
+    <option name="PROGRAM_PARAMETERS" value="&quot;C:\Program Files (x86)\Steam\steamapps\common\Diablo II&quot; SKDT1HS" />
+    <option name="VM_PARAMETERS" value="-ea" />
+    <option name="WORKING_DIRECTORY" value="file://$PROJECT_DIR$/android/assets" />
+    <method />
+  </configuration>
+</component>
\ No newline at end of file
diff --git a/tools/src/com/riiablo/codec/CofFinder.java b/tools/src/com/riiablo/codec/CofFinder.java
new file mode 100644
index 00000000..dec8b39c
--- /dev/null
+++ b/tools/src/com/riiablo/codec/CofFinder.java
@@ -0,0 +1,117 @@
+package com.riiablo.codec;
+
+import com.badlogic.gdx.Application;
+import com.badlogic.gdx.ApplicationAdapter;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.assets.AssetManager;
+import com.badlogic.gdx.backends.headless.HeadlessApplication;
+import com.badlogic.gdx.backends.headless.HeadlessApplicationConfiguration;
+import com.badlogic.gdx.files.FileHandle;
+import com.badlogic.gdx.utils.Array;
+import com.riiablo.Riiablo;
+import com.riiablo.mpq.MPQFileHandleResolver;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.tuple.Pair;
+
+import java.io.PrintWriter;
+import java.util.Arrays;
+
+public class CofFinder extends ApplicationAdapter {
+  private static final String TAG = "CofFinder";
+
+  public static void main(String[] args) {
+    HeadlessApplicationConfiguration config = new HeadlessApplicationConfiguration();
+    new HeadlessApplication(new CofFinder(args), config);
+  }
+
+  String[] cofs;
+
+  CofFinder(String[] args) {
+    Riiablo.home = new FileHandle(args[0]);
+    if (args.length > 1) {
+      this.cofs = Arrays.copyOfRange(args, 1, args.length);
+    }
+  }
+
+  @Override
+  public void create() {
+    Gdx.app.setLogLevel(Application.LOG_DEBUG);
+
+    Riiablo.home = Gdx.files.absolute(Riiablo.home.path());
+    Riiablo.assets = new AssetManager();
+    Riiablo.mpqs = new MPQFileHandleResolver();
+
+    String[] cofd2Names = {
+        "chars_cof", "cmncof_a1", "cmncof_a2", "cmncof_a3",
+        "cmncof_a4", "cmncof_a5", "cmncof_a6", "cmncof_a7",
+    };
+    Array<Pair<String, COFD2>> cofd2s = new Array<>();
+    for (String cofd2Name : cofd2Names) {
+      String path = "data\\global\\" + cofd2Name + ".d2";
+      FileHandle handle = Riiablo.mpqs.resolve(path);
+      COFD2 cofd2 = COFD2.loadFromFile(handle);
+      cofd2s.add(Pair.of(cofd2Name, cofd2));
+    }
+
+    String[] cofDirs = { "chars", "objects", "monsters" };
+
+    if (cofs == null) {
+      for (Pair<String, COFD2> pair : cofd2s) {
+        dump(pair.getValue(), pair.getKey());
+      }
+    } else {
+      for (String cof : cofs) {
+        Gdx.app.log(TAG, cof);
+        int i = 0;
+        for (Pair<String, COFD2> pair : cofd2s) {
+          if (lookup(cof, pair.getValue(), pair.getKey()) != null) i++;
+        }
+
+        for (String cofDir : cofDirs) {
+          if (lookup(cof, "data\\global\\" + cofDir + "\\") != null) i++;
+        }
+        if (i == 0) Gdx.app.log(TAG, cof + " was not found in any file!");
+      }
+    }
+
+    Gdx.app.exit();
+  }
+
+  private void dump(COFD2 lib, String libName) {
+    if (lib == null) return;
+    FileHandle handle = Gdx.files.local(libName + ".tmp");
+    Gdx.app.log(TAG, "Writing " + lib.getNumEntries() + " to " + handle);
+    PrintWriter writer = null;
+    try {
+      writer = new PrintWriter(handle.write(false));
+      for (COFD2.Entry entry : lib.entries) {
+        writer.println(entry.cofName + '\t' + entry.cofSize + '\t' + entry.cof.toString());
+      }
+    } catch (Throwable t) {
+      Gdx.app.error(TAG, t.getMessage(), t);
+    } finally {
+      IOUtils.closeQuietly(writer);
+    }
+  }
+
+  private COF lookup(String cof, COFD2 lib, String libName) {
+    if (lib == null) return null;
+    COF resolved = lib.lookup(cof);
+    if (resolved != null) Gdx.app.log(TAG, "  " + libName + " : " + resolved);
+    return resolved;
+  }
+
+  private COF lookup(String cof, String path) {
+    String fileName = cof.substring(0, 2) + "\\cof\\" + cof + ".cof";
+    FileHandle handle = Riiablo.mpqs.resolve(path + fileName);
+    COF resolved = handle != null ? COF.loadFromFile(handle) : null;
+    if (resolved != null) Gdx.app.log(TAG, "  " + handle + " : " + resolved);
+    return resolved;
+  }
+
+  @Override
+  public void dispose() {
+    Riiablo.assets.dispose();
+  }
+}