diff --git a/res/attract.conf b/res/attract.conf
index 072ce3612..b82418255 100644
--- a/res/attract.conf
+++ b/res/attract.conf
@@ -1 +1 @@
-#
# Mega-Attract-Mode configuration file
#
# Mega-Attract-Mode is split into modules. Each module can be a
# short slideshow or a self-running demo (like a game's built-in
# 'attract mode'). Modules are run in the order listed here, one
# after the next, until interrupted by user input. The last-run
# module is tracked in the master prefs file.
#
# Format:
# key=value
#
# value must be one of
#   1 for HGR slideshow (key is a file containing a list of HGR graphics)
#   2 for DHGR slideshow (key is a file containing a list of DHGR graphics)
#   3 for self-running demo (key is an executable binary file)
#
# Blank lines and lines beginning with '#' are ignored (like this one!)
# A line beginning with '[' terminates the parsing
#

DHGR.CONF=2
FAVORITES.CONF=1
#SHORT.CONF=1
#SNEAKERS=3
EFG.CONF=1
#WAVY.NAVY=3
ACTIVISION.CONF=1
CD.CONF=1
BRODERBUND.CONF=1
T.CONF=1
ATARI.CONF=1
SIERRA.CONF=1
PQR.CONF=1
DATAMOST.CONF=1
MNO.CONF=1
DATASOFT.CONF=1
S.CONF=1
MICROFUN.CONF=1
AB.CONF=1
PICCADILLY.CONF=1
HIJKL.CONF=1
SIRIUS.CONF=1

[eof]
\ No newline at end of file
+#
# Mega-Attract-Mode configuration file
#
# Mega-Attract-Mode is split into modules. Each module can be a
# short slideshow or a self-running demo (like a game's built-in
# 'attract mode'). Modules are run in the order listed here, one
# after the next, until interrupted by user input. The last-run
# module is tracked in the master prefs file.
#
# Format:
# key=value
#
# value must be one of
#   1 for HGR slideshow (key is a file containing a list of HGR graphics)
#   2 for DHGR slideshow (key is a file containing a list of DHGR graphics)
#   3 for self-running demo (key is an executable binary file)
#
# Blank lines and lines beginning with '#' are ignored (like this one!)
# A line beginning with '[' terminates the parsing
#

SHORT.CONF=1
SPARE.CHANGE=3
DHGR.CONF=2
FAVORITES.CONF=1
#SNEAKERS=3
EFG.CONF=1
#WAVY.NAVY=3
ACTIVISION.CONF=1
CD.CONF=1
BRODERBUND.CONF=1
T.CONF=1
ATARI.CONF=1
SIERRA.CONF=1
PQR.CONF=1
DATAMOST.CONF=1
MNO.CONF=1
DATASOFT.CONF=1
S.CONF=1
MICROFUN.CONF=1
AB.CONF=1
PICCADILLY.CONF=1
HIJKL.CONF=1
SIRIUS.CONF=1

[eof]
\ No newline at end of file
diff --git a/res/demo/PITFALL.II b/res/demo/PITFALL.II
new file mode 100755
index 000000000..efbf0bbb6
Binary files /dev/null and b/res/demo/PITFALL.II differ
diff --git a/res/demo/SPARE.CHANGE b/res/demo/SPARE.CHANGE
new file mode 100755
index 000000000..be33a90cf
Binary files /dev/null and b/res/demo/SPARE.CHANGE differ
diff --git a/res/demo/SPARE.CHANGE.A b/res/demo/SPARE.CHANGE.A
new file mode 100755
index 000000000..1dca79b03
Binary files /dev/null and b/res/demo/SPARE.CHANGE.A differ
diff --git a/res/demo/SPARE.CHANGE.B b/res/demo/SPARE.CHANGE.B
new file mode 100755
index 000000000..cf1717b7a
Binary files /dev/null and b/res/demo/SPARE.CHANGE.B differ
diff --git a/res/demo/SPARE.CHANGE.C b/res/demo/SPARE.CHANGE.C
new file mode 100755
index 000000000..7b4b5062d
Binary files /dev/null and b/res/demo/SPARE.CHANGE.C differ
diff --git a/res/demo/SPARE.CHANGE.D b/res/demo/SPARE.CHANGE.D
new file mode 100755
index 000000000..66b6fc7b1
Binary files /dev/null and b/res/demo/SPARE.CHANGE.D differ
diff --git a/res/demo/SPARE.CHANGE.E b/res/demo/SPARE.CHANGE.E
new file mode 100755
index 000000000..a907c2502
Binary files /dev/null and b/res/demo/SPARE.CHANGE.E differ
diff --git a/res/demo/SPARE.CHANGE.F b/res/demo/SPARE.CHANGE.F
new file mode 100755
index 000000000..825f6f652
Binary files /dev/null and b/res/demo/SPARE.CHANGE.F differ
diff --git a/res/demo/SPARE.CHANGE.G b/res/demo/SPARE.CHANGE.G
new file mode 100755
index 000000000..a7478c8ca
Binary files /dev/null and b/res/demo/SPARE.CHANGE.G differ
diff --git a/res/demo/SPARE.CHANGE.H b/res/demo/SPARE.CHANGE.H
new file mode 100755
index 000000000..cb20c46cb
Binary files /dev/null and b/res/demo/SPARE.CHANGE.H differ
diff --git a/res/demo/SPARE.CHANGE.I b/res/demo/SPARE.CHANGE.I
new file mode 100755
index 000000000..02f8fd630
Binary files /dev/null and b/res/demo/SPARE.CHANGE.I differ
diff --git a/res/demo/SPARE.CHANGE.J b/res/demo/SPARE.CHANGE.J
new file mode 100755
index 000000000..0528a4d90
Binary files /dev/null and b/res/demo/SPARE.CHANGE.J differ
diff --git a/res/demo/SPARE.CHANGE.K b/res/demo/SPARE.CHANGE.K
new file mode 100755
index 000000000..ab1d61318
Binary files /dev/null and b/res/demo/SPARE.CHANGE.K differ
diff --git a/res/demo/SPARE.CHANGE.L b/res/demo/SPARE.CHANGE.L
new file mode 100755
index 000000000..8abfbf997
Binary files /dev/null and b/res/demo/SPARE.CHANGE.L differ
diff --git a/res/demo/SPARE.CHANGE.M b/res/demo/SPARE.CHANGE.M
new file mode 100755
index 000000000..7f37c6140
Binary files /dev/null and b/res/demo/SPARE.CHANGE.M differ
diff --git a/res/demo/SPARE.CHANGE.N b/res/demo/SPARE.CHANGE.N
new file mode 100755
index 000000000..eb2023ae7
Binary files /dev/null and b/res/demo/SPARE.CHANGE.N differ
diff --git a/res/demo/SPARE.CHANGE.O b/res/demo/SPARE.CHANGE.O
new file mode 100755
index 000000000..3afd8508f
Binary files /dev/null and b/res/demo/SPARE.CHANGE.O differ
diff --git a/res/demo/SPARE.CHANGE.P b/res/demo/SPARE.CHANGE.P
new file mode 100755
index 000000000..375370509
Binary files /dev/null and b/res/demo/SPARE.CHANGE.P differ
diff --git a/res/demo/SPARE.CHANGE.Q b/res/demo/SPARE.CHANGE.Q
new file mode 100755
index 000000000..937e86826
Binary files /dev/null and b/res/demo/SPARE.CHANGE.Q differ
diff --git a/res/demo/SPARE.CHANGE.R b/res/demo/SPARE.CHANGE.R
new file mode 100755
index 000000000..8ed2a57c7
Binary files /dev/null and b/res/demo/SPARE.CHANGE.R differ
diff --git a/res/demo/SPARE.CHANGE.S b/res/demo/SPARE.CHANGE.S
new file mode 100755
index 000000000..e4cb1e261
Binary files /dev/null and b/res/demo/SPARE.CHANGE.S differ
diff --git a/res/demo/SPARE.CHANGE.T b/res/demo/SPARE.CHANGE.T
new file mode 100755
index 000000000..7a647c30c
Binary files /dev/null and b/res/demo/SPARE.CHANGE.T differ
diff --git a/res/demo/SPARE.CHANGE.Z b/res/demo/SPARE.CHANGE.Z
new file mode 100755
index 000000000..3e7700fd9
Binary files /dev/null and b/res/demo/SPARE.CHANGE.Z differ
diff --git a/res/demo/SPY.HUNTER b/res/demo/SPY.HUNTER
new file mode 100755
index 000000000..a29311731
Binary files /dev/null and b/res/demo/SPY.HUNTER differ
diff --git a/res/demo/_FileInformation.txt b/res/demo/_FileInformation.txt
index 12a2c5945..7e2170cfb 100644
--- a/res/demo/_FileInformation.txt
+++ b/res/demo/_FileInformation.txt
@@ -5,3 +5,27 @@ WAVY.NAVY.1=Type(06),AuxType(0000),Access(C3)
 LODE.RUNNER=Type(06),AuxType(1F00),Access(C3)
 LODE.RUNNER.1=Type(06),AuxType(0000),Access(C3)
 LODE.RUNNER.M=Type(06),AuxType(0000),Access(C3)
+PITFALL.II=Type(06),AuxType(08E5),Access(C3)
+SPY.HUNTER=Type(06),AuxType(0B87),Access(C3)
+SPARE.CHANGE=Type(06),AuxType(2700),Access(C3)
+SPARE.CHANGE.A=Type(06),AuxType(8E00),Access(C3)
+SPARE.CHANGE.B=Type(06),AuxType(8E00),Access(C3)
+SPARE.CHANGE.C=Type(06),AuxType(8E00),Access(C3)
+SPARE.CHANGE.D=Type(06),AuxType(8E00),Access(C3)
+SPARE.CHANGE.E=Type(06),AuxType(8E00),Access(C3)
+SPARE.CHANGE.F=Type(06),AuxType(8E00),Access(C3)
+SPARE.CHANGE.G=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.H=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.I=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.J=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.K=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.L=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.M=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.N=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.O=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.P=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.Q=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.R=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.S=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.T=Type(06),AuxType(9600),Access(C3)
+SPARE.CHANGE.Z=Type(06),AuxType(B400),Access(C3)
diff --git a/src/4cade.a b/src/4cade.a
index aeb2e69f7..35134a9bb 100644
--- a/src/4cade.a
+++ b/src/4cade.a
@@ -4,11 +4,12 @@
 
          !source "src/constants.a"
          !source "src/macros.a"
+
+         ; first-run initialization, relocates code to language card and continues from Main
          !source "src/4cade.init.a"
 
 FirstMover
 !pseudopc $D000 {
-!zone
 Reenter                              ; self-running demos should call this to exit back to 4cade
          +READ_RAM1_WRITE_RAM1
 Main
@@ -19,18 +20,6 @@ Main
          jsr   AttractMode
          jmp   -
 
-Reboot
-         ldx   #(@end-@start-1)
--        lda   @start,x
-         sta   $300,x
-         dex
-         bpl   -
-         jmp   $300
-@start
-         +READ_ROM_NO_WRITE
-         jmp   $FAA6
-@end
-
          ; these routines will only be called after relocating to language card
          !source "src/ui.attract.mode.a"
          !source "src/prodos.path.a"
diff --git a/src/4cade.init.a b/src/4cade.init.a
index 09715ab54..6f1be4e8b 100644
--- a/src/4cade.init.a
+++ b/src/4cade.init.a
@@ -1,4 +1,4 @@
-         sta   $C00E
+         sta   $C00E                 ; 40-column
          sta   $C00C
          sta   $C004
          sta   $C002
@@ -42,8 +42,8 @@
 
          ; ProRWTS2 has its own function to relocate itself
          !source "src/prorwts2.a"
-         ; these routines will only be called once, from main memory, before relocating to language card
 ProRWTSBuffer
+         ; these routines will only be called once, from main memory, before relocating to language card
          !source "src/hw.memcheck.a"
          !source "src/hw.joystick.a"
          !source "src/hw.normfast.a"
diff --git a/src/parse.prefs.a b/src/parse.prefs.a
new file mode 100644
index 000000000..33320f4cb
--- /dev/null
+++ b/src/parse.prefs.a
@@ -0,0 +1,169 @@
+;license:MIT
+;(c) 2018 by 4am
+;
+; Parser for global preferences file
+;
+; Public functions
+; - SaveGlobalPreferences
+;
+; Public variables
+; - gGlobalPrefsStore     word       address of prefs okvs
+;
+; Public constants (all length-prefixed strings)
+; - kGlobalPrefsFilename
+; - kLastPlayed
+; - kNextAttract
+; - kNextFX
+; - kNextDFX
+;
+
+gGlobalPrefsStore
+         !word 0
+
+kGlobalPrefsFilename
+         !byte 10
+         !raw  "PREFS.CONF"
+
+kLastPlayed
+         !byte 10
+         !raw  "LASTPLAYED"
+kNextAttract
+         !byte 11
+         !raw  "NEXTATTRACT"
+kNextFX
+         !byte 6
+         !raw  "NEXTFX"
+kNextDFX
+         !byte 7
+         !raw  "NEXTDFX"
+
+;------------------------------------------------------------------------------
+; SaveGlobalPreferences
+; save global options and state to file
+;
+; in:    none
+; out:   all registers and flags clobbered
+;------------------------------------------------------------------------------
+SaveGlobalPreferences
+         +LDADDR kGlobalPrefsBuffer
+         +STAY $FE
+
+         +LDADDR @kFluff1
+         jsr   @addString
+
+         jsr   @addBooleanFromStore
+         !word kForce40
+
+         jsr   @addBooleanFromStore
+         !word kForceUpper
+
+         jsr   @addBooleanFromStore
+         !word kScriptToFile
+
+         jsr   @addBooleanFromStore
+         !word kAutoScript
+
+         +LDADDR @kFluff2
+         jsr   @addString
+
+         jsr   @addStringFromStore
+         !word kLastPlayed
+
+         +LDADDR @kFluff3
+         jsr   @addString
+
+         jsr   okvs_iter
+         !word gGamesListStore
+         !word @addGameToPrefs
+
+         +LDADDR @kEOF
+         jsr   @addString
+
+         lda   $FE
+         sta   @filelen
+         lda   $FF
+         sec
+         sbc   #>kGlobalPrefsBuffer
+         sta   @filelen+1
+
+         jsr   SaveFile
+         !word kGlobalPrefsFilename
+         !byte 4                     ; filetype=TXT
+         !word 0                     ; auxtype=0000
+         !word kGlobalPrefsBuffer
+@filelen !word $FDFD                 ; SMC
+         !word kProDOSFileBuffer
+
+         stz   gGlobalPrefsDirty
+@exit    rts
+
+@addGameToPrefs
+         +STAY +
+         jsr   @addStringFromStore
++        !word $FDFD                 ; SMC
+         rts
+
+@addBooleanFromStore
+         lda   #$24                  ; BIT opcode
+         +HIDE_NEXT_2_BYTES
+@addStringFromStore
+         lda   #$80                  ; BRA opcode
+         sta   @skipOverBooleanLogic
+         +PARAMS_ON_STACK 2
+         +LDPARAM 1
+         +STAY @key
+         jsr   @addString
+         +LDADDR @kEquals
+         jsr   @addString
+         jsr   okvs_get
+         !word gGlobalPrefsStore
+@key     !word $FDFD                 ; SMC
+@skipOverBooleanLogic
+         bra   +                     ; SMC (opcode may become BIT)
+         +STAY PTR
+         ldy   #1
+         lda   (PTR),y
+         ora   #$30
+         sta   (PTR),y
+         +LDAY PTR
++        jsr   @addString
+         +LDADDR @kLF
+         jmp   @addString
+
+@addString
+         +STAY $00
+         lda   ($00)
+         inc
+         sta   @len
+         ldy   #1
+-        lda   ($00),y
+         sta   ($FE)
++        iny
+         inc   $FE
+         bne   +
+         inc   $FF
+@len=*+1
++        cpy   #$FD                  ; SMC
+         bne   -
+         rts
+
+@kEquals !byte 1
+         !raw  "="
+@kLF     !byte 1
+         !byte $0D
+@kFluff1 !byte @kFluff1_e-@kFluff1_b
+@kFluff1_b
+         !raw  "# 4cade preferences file",$0D
+         !raw  "# Do not edit by hand.",$0D
+         !raw  "# Or do. I'm a comment, not a cop.",$0D,$0D
+         !raw  "# value=game directory listed in GAMES.CONF, or empty",$0D
+@kFluff1_e
+@kFluff2 !byte 24
+         !byte $0D
+         !raw  "# value=game directory",$0D
+@kFluff3 !byte 58
+         !byte $0D
+         !raw  "# key=game directory, value=filename of selected version",$0D
+@kEOF    !byte 7
+         !byte $0D
+         !raw  "[eof]",$0D
diff --git a/src/ui.attract.mode.a b/src/ui.attract.mode.a
index 99f4c8f8a..9e1e63aea 100644
--- a/src/ui.attract.mode.a
+++ b/src/ui.attract.mode.a
@@ -71,7 +71,6 @@ AttractMode
          bpl   -
          jmp   $106                  ; jump to pre-launch code
 
-!pseudopc $100 {
 @prelaunch                           ; this runs from main memory
          lda   $C088                 ; entry point used by some self-running demos
          jmp   Reenter
@@ -89,7 +88,6 @@ AttractMode
          txs
          jmp   (ldrlo2)              ; jump to game
 @end_prelaunch
-}
 
 @Slideshow                           ; HGR or DHGR slideshow
          pha                         ; save module type (1=HGR, 2=DHGR)