diff --git a/GameRes/FileSystem.cs b/GameRes/FileSystem.cs
index 5227f194..eb4f26c9 100644
--- a/GameRes/FileSystem.cs
+++ b/GameRes/FileSystem.cs
@@ -40,6 +40,11 @@ namespace GameRes
         /// <exception cref="FileNotFoundException">File is not found.</exception>
         Entry FindFile (string filename);
 
+        /// <summary>
+        /// System.IO.File.Exists() analog.
+        /// </summary>
+        bool FileExists (string filename);
+
         /// <summary>
         /// Open file for reading as stream.
         /// </summary>
@@ -104,6 +109,11 @@ namespace GameRes
                 return EntryFromFileInfo (new FileInfo (filename));
         }
 
+        public bool FileExists (string filename)
+        {
+            return File.Exists (filename);
+        }
+
         public IEnumerable<Entry> GetFiles ()
         {
             var info = new DirectoryInfo (CurrentDirectory);
@@ -192,6 +202,11 @@ namespace GameRes
             }
         }
 
+        public bool FileExists (string filename)
+        {
+            return m_dir.ContainsKey (filename);
+        }
+
         public Stream OpenStream (Entry entry)
         {
             return m_arc.OpenEntry (entry);
@@ -529,6 +544,11 @@ namespace GameRes
             return m_vfs.Top.FindFile (filename);
         }
 
+        public static bool FileExists (string filename)
+        {
+            return m_vfs.Top.FileExists (filename);
+        }
+
         public static Stream OpenStream (Entry entry)
         {
             return m_vfs.Top.OpenStream (entry);
@@ -544,6 +564,21 @@ namespace GameRes
             return m_vfs.Top.OpenView (entry);
         }
 
+        public static Stream OpenStream (string filename)
+        {
+            return m_vfs.Top.OpenStream (m_vfs.Top.FindFile (filename));
+        }
+
+        public static Stream OpenSeekableStream (string filename)
+        {
+            return m_vfs.Top.OpenSeekableStream (m_vfs.Top.FindFile (filename));
+        }
+
+        public static ArcView OpenView (string filename)
+        {
+            return m_vfs.Top.OpenView (m_vfs.Top.FindFile (filename));
+        }
+
         public static void ChDir (Entry entry)
         {
             m_vfs.ChDir (entry);