diff --git a/BizHawk.Emulation/Consoles/Sega/Genesis/Compat.txt b/BizHawk.Emulation/Consoles/Sega/Genesis/Compat.txt
index e6322be6bd..2472610089 100644
--- a/BizHawk.Emulation/Consoles/Sega/Genesis/Compat.txt
+++ b/BizHawk.Emulation/Consoles/Sega/Genesis/Compat.txt
@@ -11,7 +11,7 @@ GAMES:
 
 Ahhh! Real monsters - no sound
 Adventures of Mighty Max - crashes memory mapper
-Air Diver - palette issue - suffer from lack of 2cell vscroll
+Air Diver - suffer from lack of 2cell vscroll
 Alien Storm.... gfx glitches. control glitches?
 Altered Beast: start with 0 health, 0 lives???
 Another World .. broken.. (E) tho
@@ -45,6 +45,7 @@ Final Blow - Music messed up
 Fire Shark - Messed up sound
 Flavio's Raster FX Test.. doesnt work
 Foreman for Real doent boot
+Galaxy Force II - minor gfx corruption now...
 Garfield... immediate gfx corruption. debug target.
 Gargoyles... gameplay is nonfunctional
 Gauntlet 4 .. title screen messed. gfx corruption. immediately - debug target.
@@ -56,6 +57,7 @@ Insector X .. title screen gfx issue
 James Pond 3 crash in intro
 Jim Power - gfx glitches
 Jurassic Park 2 - crashes in intro
+Landstalker - Sprite masking on bottom is too high on the screen...
 Lemmings: Sound is royally effed... gfx glitches.
 Marvel Land .. holy shit thats psychadelic
 Mega Bomberman....gfx glitches title screen
@@ -86,7 +88,6 @@ Truxton - Sound is jaaaacked.
 Verytex - gfx issues
 World of Illusion doesnt boot
 Zero Tolerance - gfx bugs that didnt used to happen :(
-
 Zombies At My Neighbors: doesnt boot really
 Zoop doesnt boot
 
diff --git a/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs b/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs
index 0596a40836..652cfd4f89 100644
--- a/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs
+++ b/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs
@@ -244,11 +244,12 @@ namespace BizHawk.Emulation.Consoles.Sega
             {
                 if (sprite.Y > ScanLine || sprite.Y+sprite.HeightPixels <= ScanLine)
                     goto nextSprite;
-                if (sprite.X + sprite.WidthPixels <= 0) 
+
+                if (sprite.X == -127) // masking code is not super tested
+                    break; // TODO does masking mode 2 really exist?
+
+                if (sprite.X + sprite.WidthPixels <= 0)
                     goto nextSprite;
-                if (sprite.X == -128)
-                    throw new Exception("bleeeh"); // masking code is not really tested
-                    //break; // TODO this satisfies masking mode 1 but not masking mode 2
 
                 if (sprite.HeightCells == 2)
                     sprite.HeightCells = 2;