diff --git a/BizHawk.Emulation/Consoles/Gambatte/Gambatte.cs b/BizHawk.Emulation/Consoles/Gambatte/Gambatte.cs
index 27d4e8dec3..36acc9b532 100644
--- a/BizHawk.Emulation/Consoles/Gambatte/Gambatte.cs
+++ b/BizHawk.Emulation/Consoles/Gambatte/Gambatte.cs
@@ -6,6 +6,9 @@ using System.IO;
 
 namespace BizHawk.Emulation.Consoles.Gambatte
 {
+	/// <summary>
+	/// a gameboy/gameboy color emulator wrapped around native C++ libgambatte
+	/// </summary>
 	public class Gambatte : IEmulator, IVideoProvider
 	{
 		/// <summary>
@@ -97,19 +100,13 @@ namespace BizHawk.Emulation.Consoles.Gambatte
 
 		public byte[] ReadSaveRam
 		{
-			get { throw new NotImplementedException(); }
+			get { return new byte[0]; }
 		}
 
 		public bool SaveRamModified
 		{
-			get
-			{
-				throw new NotImplementedException();
-			}
-			set
-			{
-				throw new NotImplementedException();
-			}
+			get;
+			set;
 		}
 
 		public void ResetFrameCounter()
@@ -176,6 +173,9 @@ namespace BizHawk.Emulation.Consoles.Gambatte
 
 		#region IVideoProvider
 
+		/// <summary>
+		/// stored image of most recent frame
+		/// </summary>
 		int[] VideoBuffer = new int[160 * 144];
 
 		public int[] GetVideoBuffer()
diff --git a/BizHawk.MultiClient/MainForm.cs b/BizHawk.MultiClient/MainForm.cs
index efc850eb9c..e5723a829f 100644
--- a/BizHawk.MultiClient/MainForm.cs
+++ b/BizHawk.MultiClient/MainForm.cs
@@ -2601,7 +2601,7 @@ namespace BizHawk.MultiClient
 			if (INTERIM)
 			{
 				ofd.Filter = FormatFilter(
-					"Rom Files", "*.nes;*.sms;*.gg;*.sg;*.pce;*.sgx;*.bin;*.smd;*.rom;*.a26;*.cue;*.exe;*.gg;*.gen;*.col;*.smc;*.sfc;%ARCH%",
+					"Rom Files", "*.nes;*.sms;*.gg;*.sg;*.pce;*.sgx;*.bin;*.smd;*.rom;*.a26;*.cue;*.exe;*.gb;*.gbc;*.gen;*.col;*.smc;*.sfc;%ARCH%",
 					"Disc Images", "*.cue",
 					"NES", "*.nes;%ARCH%",
 					"Super NES", "*.smc;*.sfc;%ARCH%",
@@ -2612,7 +2612,7 @@ namespace BizHawk.MultiClient
 					"Savestate", "*.state",
 					"Atari 2600 (experimental)", "*.a26;*.bin;%ARCH%",
 					"Genesis (experimental)", "*.gen;*.smd;*.bin;*.cue;%ARCH%",
-					"Gameboy (experimental)", "*.gb;%ARCH%",
+					"Gameboy (experimental)", "*.gb;*.gbc;%ARCH%",
 					"Colecovision (very experimental)", "*.col;%ARCH%",
                     "Intellivision (very experimental)", "*.int;*.bin;*.rom;%ARCH%",
 					"PSX Executables (experimental)", "*.exe",