diff --git a/bin/buildpre.js b/bin/buildpre.js
index 94627a43a..254e8321f 100644
--- a/bin/buildpre.js
+++ b/bin/buildpre.js
@@ -32,7 +32,7 @@ for (i = 0; i < entries.length; i++)
     size = ((Math.floor(c / 512) == Math.floor((c + size) / 512)) ? size : (((c + size + 511) & -512) - c))
   }
 
-  groups += "!byte " + (1 + 1 + entries[i].length + 5) + "\n" + "!byte " + entries[i].length + "\n" + "!text \"" + entries[i] + "\"\n" + "!be24 " + c + "\n" + "!le16 " + size + "\n"
+  groups += "!byte " + (1 + 1 + entries[i].length + 3 + 2) + "\n" + "!byte " + entries[i].length + "\n" + "!text \"" + entries[i] + "\"\n" + "!be24 " + c + "\n" + "!le16 " + size + "\n"
 }
 
 f = a.createtextfile("build\\pre.tmp")
diff --git a/bin/buildsearch.js b/bin/buildsearch.js
index ea092b39c..9366559df 100644
--- a/bin/buildsearch.js
+++ b/bin/buildsearch.js
@@ -6,23 +6,7 @@ entries = []
 
 while (!b.stdout.atendofstream)
 {
-  c = b.stdout.readline()
-  d = c.indexOf("#")
-
-  if (d >= 0)
-  {
-    c = c.substr(0, d)
-  }
-
-  if (c.indexOf("[eof]") >= 0)
-  {
-    break
-  }
-
-  if (c.length > 0)
-  {
-    entries.push(c)
-  }
+  entries.push(b.stdout.readline())
 }
 
 a.createtextfile(WScript.Arguments(1)).write(";\r\n; Game count\r\n;\r\n; This file is automatically generated\r\n;\r\n" + "!word " + "         ".substr(0, 8 - entries.length.toString().length) + entries.length + "\r\n")
@@ -38,14 +22,15 @@ dhgrlog = a.opentextfile("build\\DHGR.TITLES.LOG").readall().replace(/\r\n/, "\n
 for (i = 0; i < entries.length; i++)
 {
   bits = entries[i].indexOf(",")
-  dhgr = entries[i].substr(bits - 2, 1)
+  dhgr = entries[i].substr(2, 1)
 
   if (WScript.Arguments(1).substr(WScript.Arguments(1).length - 3, 1) == "0")
   {
     dhgr = "0"
   }
 
-  cheat = entries[i].substr(bits - 1, 1)
+  cheat = entries[i].substr(3, 1)
+  sng = entries[i].substr(4, 1)
   eq = entries[i].indexOf("=")
   key = ((eq >= 0) ? entries[i].substr(bits + 1, eq - bits - 1) : entries[i])
   value = ((eq >= 0) ? entries[i].substr(eq + 1) : "")
@@ -56,7 +41,7 @@ for (i = 0; i < entries.length; i++)
   source.writeline("!byte " + value.length)
   source.writeline("!text \"" + value + "\"")
   source.writeline("!byte 1")
-  source.writeline("!byte " + ((dhgr * 128) + Number(cheat)))
+  source.writeline("!byte " + ((dhgr * 128) + (sng * 64) + Number(cheat)))
 
   if (dhgr != 0)
   {
diff --git a/bin/buildsingle.js b/bin/buildsingle.js
new file mode 100644
index 000000000..a53bd8296
--- /dev/null
+++ b/bin/buildsingle.js
@@ -0,0 +1,52 @@
+a = new ActiveXObject("scripting.filesystemobject")
+x = new ActiveXObject("wscript.shell")
+b = x.exec('findstr /b \"....1\" build\\DISPLAY.CONF')
+
+entries = []
+
+while (!b.stdout.atendofstream)
+{
+  c = b.stdout.readline()
+  c = c.substr(c.indexOf(",") + 1)
+  c = c.substr(0, c.indexOf("="))
+  entries.push(c)
+}
+
+for (i = 0; i < entries.length; i++)
+{
+  x.run('cmd /c move /y build\\X\\' + entries[i] + ' ' + WScript.Arguments(0), 0, 1)
+}
+
+groups = "*=0\n" + "!le16 " + entries.length + ", 0\n"
+sng_off = a.getfile(WScript.Arguments(2)).size
+b = a.createtextfile("build\\sng.lst")
+
+for (i = 0; i < entries.length; i++)
+{
+  c = sng_off
+  item = (new Enumerator(a.GetFolder(WScript.Arguments(0) + "\\" + entries[i]).files)).item()
+  name = a.GetFileName(item)
+  key = name.substr(0,name.indexOf("#"))
+  addr = name.substr(name.indexOf("#") + 3)
+  b.writeline(key + "\\" + name)
+  size = item.size
+  sng_off += size
+
+  if (WScript.Arguments.length == 4)
+  {
+    // if offset+size does not cross a block boundary, use the size
+    // otherwise adjust size until it ends at the next block boundary to avoid a partial copy on the last block
+    size = ((Math.floor(c / 512) == Math.floor((c + size) / 512)) ? size : (((c + size + 511) & -512) - c))
+  }
+
+  groups += "!byte " + (1 + 1 + key.length + 3 + 2 + 2) + "\n" + "!byte " + key.length + "\n" + "!text \"" + key + "\"\n" + "!be24 " + c + "\n" + "!le16 " + size + "\n" + "!le16 $" + addr + "\n"
+}
+
+b.close()
+
+f = a.createtextfile("build\\sng.tmp")
+f.write(groups)
+f.close()
+x = new ActiveXObject("wscript.shell")
+x.run('cmd /c %acme% -o ' + WScript.Arguments(1) + ' build\\sng.tmp', 0, 1)
+x.run('cmd /c bin\\buildsngall.bat ' + WScript.Arguments(0) + ' ' + WScript.Arguments(2), 0, 1)
diff --git a/bin/buildsngall.bat b/bin/buildsngall.bat
new file mode 100644
index 000000000..d93936eb8
--- /dev/null
+++ b/bin/buildsngall.bat
@@ -0,0 +1,2 @@
+@echo off
+for /f "tokens=*" %%a in (build\sng.lst) do 1>nul copy /b /y %2+%1\%%a %2
diff --git a/winmake.bat b/winmake.bat
index 340cde8df..8cb75c7a5 100644
--- a/winmake.bat
+++ b/winmake.bat
@@ -2,6 +2,7 @@
 rem
 rem 4cade Makefile for Windows
 rem assembles source code, optionally builds a disk image
+rem note: non-Windows users should probably use Makefile instead
 rem
 rem a qkumba monstrosity from 2018-10-29
 rem
@@ -11,18 +12,22 @@ set DISK=4cade.hdv
 set VOLUME=TOTAL.REPLAY
 
 rem third-party tools required to build (must be in path)
+
 rem https://sourceforge.net/projects/acme-crossass/
 rem version 0.96.3 or later
 set ACME=acme
-rem https://bitbucket.org/magli143/exomizer/wiki/Home
-rem version 3.1.0 or later
-set EXOMIZER=exomizer mem -q -P23 -lnone
+
 rem https://github.com/mach-kernel/cadius
 rem version 1.4.6 or later
 set CADIUS=cadius
+
 rem https://github.com/
 set GIT=git
 
+rem https://bitbucket.org/magli143/exomizer/wiki/Home
+rem version 3.1.0 or later
+set EXOMIZER=exomizer mem -q -P23 -lnone
+
 if "%1" equ "dsk" (
 call :index
 if "%2". equ "". (
@@ -46,22 +51,12 @@ if "%2". equ "". (
 echo|set/p="adding files..."
 %CADIUS% ADDFILE "build\%DISK%" "/%VOLUME%/" "build\TOTAL.DATA" -C >>build\log
 if "%2". equ "". (
-  %CADIUS% ADDFILE "build\%DISK%" "/%VOLUME%/" "build\PREFS.CONF" -C >>build\log
-  %CADIUS% ADDFILE "build\%DISK%" "/%VOLUME%/" "res\Finder.Data" -C >>build\log
-  %CADIUS% ADDFILE "build\%DISK%" "/%VOLUME%/" "res\Finder.Root" -C >>build\log
-  %CADIUS% ADDFOLDER "build\%DISK%" "/%VOLUME%/DEMO" "res\DEMO" -C >>build\log
-  %CADIUS% ADDFOLDER "build\%DISK%" "/%VOLUME%/TITLE.ANIMATED" "res\TITLE.ANIMATED" -C >>build\log
-  %CADIUS% ADDFOLDER "build\%DISK%" "/%VOLUME%/ICONS" "res\ICONS" -C >>build\log
-  %CADIUS% ADDFOLDER "build\%DISK%" "/%VOLUME%/FX/" "build\FX" -C >>build\log
-  %CADIUS% ADDFOLDER "build\%DISK%" "/%VOLUME%/PRELAUNCH/" "build\PRELAUNCH" -C >>build\log
-  %CADIUS% RENAMEFILE "build\%DISK%" "/%VOLUME%/DEMO/SPCARTOON.11" "SPCARTOON.1." >>build\log
-  %CADIUS% RENAMEFILE "build\%DISK%" "/%VOLUME%/DEMO/SPCARTOON.22" "SPCARTOON.2." >>build\log
-  %CADIUS% RENAMEFILE "build\%DISK%" "/%VOLUME%/DEMO/SPCARTOON.33" "SPCARTOON.3." >>build\log
-  %CADIUS% RENAMEFILE "build\%DISK%" "/%VOLUME%/DEMO/SPCARTOON.44" "SPCARTOON.4." >>build\log
-  %CADIUS% RENAMEFILE "build\%DISK%" "/%VOLUME%/DEMO/SPCARTOON.55" "SPCARTOON.5." >>build\log
-  %CADIUS% RENAMEFILE "build\%DISK%" "/%VOLUME%/DEMO/SPCARTOON.66" "SPCARTOON.6." >>build\log
-  for %%q in (res\dsk\*.po) do %CADIUS% EXTRACTVOLUME "%%q" build\X\ >>build\log
-  1>nul 2>nul del /s build\X\.DS_Store build\X\PRODOS* build\X\LOADER.SYSTEM*
+  for %%q in (build\PREFS.CONF res\Finder.Data res\Finder.Root) do %CADIUS% ADDFILE "build\%DISK%" "/%VOLUME%/" "build\%%~nxq" -C >>build\log
+  for %%q in (res\DEMO res\TITLE.ANIMATED res\ICONS build\FX build\PRELAUNCH) do (
+    1>nul 2>nul del /s "%%q\.DS_Store"
+    %CADIUS% ADDFOLDER "build\%DISK%" "/%VOLUME%/%%~nxq" %%q -C >>build\log
+  )
+  for %%q in (1 2 3 4 5 6) do %CADIUS% RENAMEFILE "build\%DISK%" "/%VOLUME%/DEMO/SPCARTOON.%%q%%q" "SPCARTOON.%%q." >>build\log
   %CADIUS% CREATEFOLDER "build\%DISK%" "/%VOLUME%/X/" -C >>build\log
   %CADIUS% ADDFOLDER "build\%DISK%" "/%VOLUME%/X" "build\X" -C >>build\log
   cscript /nologo bin\changebootloader.js "build\%DISK%" build\proboothd
@@ -162,8 +157,8 @@ for %%q in (res\SS\*) do (
   )
 )
 cscript /nologo bin\buildss.js build\SS build\SLIDESHOW.IDX nul build\TOTAL.DATA nul pad >>build\log
-for %%q in (res\ATTRACT\A* res\ATTRACT\B* res\ATTRACT\C* res\ATTRACT\D* res\ATTRACT\E* res\ATTRACT\F* res\ATTRACT\G* res\ATTRACT\H* res\ATTRACT\I* res\ATTRACT\J* res\ATTRACT\K* res\ATTRACT\L* res\ATTRACT\M* res\ATTRACT\N* res\ATTRACT\O* res\ATTRACT\P*) do cscript /nologo bin\buildokvs.js %%q build\ATTRACT0\%%~nxq >>build\log
-for %%q in (res\ATTRACT\Q* res\ATTRACT\R* res\ATTRACT\S* res\ATTRACT\T* res\ATTRACT\U* res\ATTRACT\V* res\ATTRACT\W* res\ATTRACT\X* res\ATTRACT\Y* res\ATTRACT\Z*) do cscript /nologo bin\buildokvs.js %%q build\ATTRACT1\%%~nxq >>build\log
+for %%q in (A B C D E F G H I J K L M N O P) do for %%k in (res\ATTRACT\%%q*) do cscript /nologo bin\buildokvs.js %%k build\ATTRACT0\%%~nxk >>build\log
+for %%q in (Q R S T U V W X Y Z) do for %%k in (res\ATTRACT\%%q*) do cscript /nologo bin\buildokvs.js %%k build\ATTRACT1\%%~nxk >>build\log
 cscript /nologo bin\buildss.js build\ATTRACT0 build\MINIATTRACT0.IDX nul build\TOTAL.DATA nul pad >>build\log
 cscript /nologo bin\buildss.js build\ATTRACT1 build\MINIATTRACT1.IDX nul build\TOTAL.DATA nul pad >>build\log
 echo done
@@ -189,13 +184,13 @@ echo|set/p="indexing (d)hgr action..."
 1>nul copy /y nul build\ACTIONHGR5
 1>nul copy /y nul build\ACTIONHGR6
 1>nul copy /y nul build\ACTIONDHGR
-for %%q in (res\ACTION.HGR\A* res\ACTION.HGR\B* res\ACTION.HGR\C* res\ACTION.HGR\D*) do 1>nul >>build\ACTIONHGR0 echo %%q
-for %%q in (res\ACTION.HGR\E* res\ACTION.HGR\F* res\ACTION.HGR\G* res\ACTION.HGR\H*) do 1>nul >>build\ACTIONHGR1 echo %%q
-for %%q in (res\ACTION.HGR\I* res\ACTION.HGR\J* res\ACTION.HGR\K* res\ACTION.HGR\L*) do 1>nul >>build\ACTIONHGR2 echo %%q
-for %%q in (res\ACTION.HGR\M* res\ACTION.HGR\N* res\ACTION.HGR\O* res\ACTION.HGR\P*) do 1>nul >>build\ACTIONHGR3 echo %%q
-for %%q in (res\ACTION.HGR\Q* res\ACTION.HGR\R* res\ACTION.HGR\S* res\ACTION.HGR\T*) do 1>nul >>build\ACTIONHGR4 echo %%q
-for %%q in (res\ACTION.HGR\U* res\ACTION.HGR\V* res\ACTION.HGR\W* res\ACTION.HGR\X*) do 1>nul >>build\ACTIONHGR5 echo %%q
-for %%q in (res\ACTION.HGR\Y* res\ACTION.HGR\Z*) do 1>nul >>build\ACTIONHGR6 echo %%q
+for %%q in (A B C D) do for %%k in (res\ACTION.HGR\%%q*) do 1>nul >>build\ACTIONHGR0 echo %%k
+for %%q in (E F G H) do for %%k in (res\ACTION.HGR\%%q*) do 1>nul >>build\ACTIONHGR1 echo %%k
+for %%q in (I J K L) do for %%k in (res\ACTION.HGR\%%q*) do 1>nul >>build\ACTIONHGR2 echo %%k
+for %%q in (M N O P) do for %%k in (res\ACTION.HGR\%%q*) do 1>nul >>build\ACTIONHGR3 echo %%k
+for %%q in (Q R S T) do for %%k in (res\ACTION.HGR\%%q*) do 1>nul >>build\ACTIONHGR4 echo %%k
+for %%q in (U V W X) do for %%k in (res\ACTION.HGR\%%q*) do 1>nul >>build\ACTIONHGR5 echo %%k
+for %%q in (Y Z) do for %%k in (res\ACTION.HGR\%%q*) do 1>nul >>build\ACTIONHGR6 echo %%k
 for %%q in (res\ACTION.DHGR\*) do 1>nul >>build\ACTIONDHGR echo %%q
 cscript /nologo bin\buildss.js build\ACTIONHGR0* build\HGR0.IDX nul build\TOTAL.DATA nul >>build\log
 cscript /nologo bin\buildss.js build\ACTIONHGR1* build\HGR1.IDX nul build\TOTAL.DATA build\TOTAL.DATA >>build\log
@@ -225,6 +220,17 @@ echo|set/p="indexing shr..."
 cscript /nologo bin\buildss.js res\ARTWORK.SHR build\ARTWORK.IDX nul build\TOTAL.DATA nul >>build\log
 echo done
 rem
+rem precompute indexed files for single-load game binaries
+rem note: these can be padded because they are loaded at a time when all of main memory is clobber-able
+rem
+echo|set/p="indexing single-loaders..."
+for %%q in (res\dsk\*.po) do %CADIUS% EXTRACTVOLUME "%%q" build\X\ >>build\log
+1>nul 2>nul del /s build\X\.DS_Store build\X\PRODOS* build\X\LOADER.SYSTEM*
+1>nul copy /y nul build\XSINGLE.IDX
+cscript /nologo bin\buildsingle.js build\X.INDEXED build\XSINGLE.IDX build\TOTAL.DATA pad >>build\log
+cscript /nologo bin\addfile.js build\XSINGLE.IDX src\index\xsingle.idx.a
+echo done
+rem
 rem create search indexes for each variation of (game-requires-joystick) X (game-requires-128K)
 rem in the form of OKVS data structures, plus game counts in the form of source files
 rem
@@ -285,10 +291,11 @@ goto :EOF
 :md
 2>nul md build
 2>nul md build\X
-2>nul md build\FX.INDEXED
+2>nul md build\X.INDEXED
 2>nul md build\FX
-2>nul md build\PRELAUNCH.INDEXED
+2>nul md build\FX.INDEXED
 2>nul md build\PRELAUNCH
+2>nul md build\PRELAUNCH.INDEXED
 2>nul md build\ATTRACT0
 2>nul md build\ATTRACT1
 2>nul md build\SS
@@ -333,3 +340,4 @@ goto :EOF
 for %%q in (res\action.dhgr.uncompressed\*) do if not exist res\action.dhgr\%%~nxq %EXOMIZER% res\action.dhgr.uncompressed\%%~nxq@0x4000 -o res\action.hgr\%%~nxq
 for %%q in (res\action.hgr.uncompressed\*) do if not exist res\action.hgr\%%~nxq %EXOMIZER% res\action.hgr.uncompressed\%%~nxq@0x4000 -o res\action.hgr\%%~nxq
 for %%q in (res\artwork.shr.uncompressed\*) do if not exist res\artwork.shr\%%~nxq %EXOMIZER% res\artwork.shr.uncompressed\%%~nxq@0x2000 -o res\artwork.shr\%%~nxq
+for %%q in (res\title.hgr.uncompressed\*) do if not exist res\title.hgr\%%~nxq %EXOMIZER% res\title.hgr.uncompressed\%%~nxq@0x2000 -o res\title.hgr\%%~nxq