going on a string localization rampage in the default theme. aside from graphics, this should be the last of the non-themeable text that actually matters (unless someone really has to change 'P1'/'P2' on the DifficultyList cursors...)

Themes/default/BGAnimations/ScreenGameOver underlay/default.lua

@@ -1,11 +1,11 @@
 return Def.ActorFrame {
 	InitCommand=cmd(x,SCREEN_CENTER_X;y,SCREEN_CENTER_Y);
 	LoadFont("Common Normal") .. {
-		Text="GAME OVER";
+		Text=ScreenString("GAME OVER");
 		InitCommand=cmd(y,-4;shadowlength,1;diffuse,Color("Red"));
 	};
 	LoadFont("Common Normal") .. {
-		Text="Play again soon!";
+		Text=ScreenString("Play again soon!");
 		InitCommand=cmd(y,16;shadowlength,1;zoom,0.5;);
 	};
 };

Themes/default/BGAnimations/ScreenHowToPlay overlay/default.lua

@@ -46,7 +46,7 @@ return Def.ActorFrame {
 
 	-- messages
 	LoadFont("Common Normal") .. {
-		Text="How To Play StepMania",
+		Text=ScreenString("How To Play StepMania"),
 		InitCommand=cmd(zbuffer,1;z,20;x,SCREEN_CENTER_X;y,SCREEN_CENTER_Y;shadowlength,1;strokecolor,Color("Outline"));
 		OnCommand=cmd(diffusealpha,0;zoom,4;sleep,0.0;linear,0.3;diffusealpha,1;zoom,1;sleep,1.8;linear,0.3;zoom,0.75;x,170;y,60);
 	};

Themes/default/Graphics/Player judgment/default.lua

@@ -76,7 +76,7 @@ t[#t+1] = Def.ActorFrame {
 	};
 	LoadFont("Common Normal") .. {
 		Name="TextDisplay";
-		Text="MS";
+		Text=THEME:GetString("Protiming","MS");
 		InitCommand=cmd(visible,false);
 		OnCommand=THEME:GetMetric("Protiming","TextOnCommand");
 		ResetCommand=cmd(finishtweening;stopeffect;visible,false);

Themes/default/Graphics/ScreenMapControllers exit.lua

@@ -1,5 +1,5 @@
 return LoadFont("Common Normal") .. {
-	Text="Exit";
+	Text=ScreenString("Exit");
 	InitCommand=cmd(x,SCREEN_CENTER_X;zoom,0.75;shadowlength,0;diffuse,color("#880000");NoStroke);
 	OnCommand=cmd(diffusealpha,0;decelerate,0.5;diffusealpha,1);
 	OffCommand=cmd(stoptweening;accelerate,0.3;diffusealpha,0;queuecommand,"Hide");

Themes/default/Graphics/ScreenOptions disqualify.lua

@@ -1,3 +1,3 @@
 return LoadFont("Common Normal") .. {
-	Text="Score will be disqualified!";
+	Text=ScreenString("Disqualified");
 };

Themes/default/Languages/en.ini

@@ -74,6 +74,7 @@ HelpText=&BACK; Exit &START; Select / Join &SELECT; Magic Codes &MENULEFT;&MENUR
 
 [ScreenOptions]
 HelpText=&BACK; Exit &START; Choose &SELECT; Go Up &MENULEFT;&MENURIGHT;&MENUUP;&MENUDOWN; Move
+Disqualified=Score will be disqualified!
 
 [ScreenStageInformation]
 HelpText=
@@ -218,3 +219,16 @@ V=V
 A=A
 F=F
 C=C
+
+[ScreenMapControllers]
+Exit=Exit
+
+[ScreenGameOver]
+GAME OVER=GAME OVER
+Play again soon!=Play again soon!
+
+[ScreenHowToPlay]
+How To Play StepMania=How To Play StepMania
+
+[Protiming]
+MS=MS