diff --git a/res/SFX.CONF b/res/SFX.CONF
index bb6679273..2622986b7 100644
--- a/res/SFX.CONF
+++ b/res/SFX.CONF
@@ -40,11 +40,12 @@
 # This file is converted to a binary data structure (SFX.IDX) during build
 # then added to TOTAL.DATA on the final disk image.
 #
+SHR.80.SPIRAL
 SHR.80BOXES
 SHR.FIZZLE
 SHR.TWOPASS.LR
+SHR.80.SNAKE
 SHR.DIAGONAL
-SHR.80.SPIRAL
 SHR.LR
 SHR.FADEIN
 SHR.LR2
diff --git a/src/fx/fx.shr.80boxes.snake.a b/src/fx/fx.shr.80boxes.snake.a
new file mode 100644
index 000000000..80b1233db
--- /dev/null
+++ b/src/fx/fx.shr.80boxes.snake.a
@@ -0,0 +1,28 @@
+;license:MIT
+;(c) 2021 by 4am
+;
+
+!cpu 6502
+!to "build/FX.INDEXED/SHR.80.SNAKE",plain
+*=$A000
+
+         !source "src/fx/fx.shr.80boxes.common.a"
+
+         !byte $00,$FF,$FE,$FD,$FC,$FB,$FA,$F9,$F8,$F7
+         !byte $ED,$EE,$EF,$F0,$F1,$F2,$F3,$F4,$F5,$F6
+         !byte $EC,$EB,$EA,$E9,$E8,$E7,$E6,$E5,$E4,$E3
+         !byte $D9,$DA,$DB,$DC,$DD,$DE,$DF,$E0,$E1,$E2
+         !byte $D8,$D7,$D6,$D5,$D4,$D3,$D2,$D1,$D0,$CF
+         !byte $C5,$C6,$C7,$C8,$C9,$CA,$CB,$CC,$CD,$CE
+         !byte $C4,$C3,$C2,$C1,$C0,$BF,$BE,$BD,$BC,$BB
+         !byte $B1,$B2,$B3,$B4,$B5,$B6,$B7,$B8,$B9,$BA
+
+StageInitialIndexes
+         !byte 7,7,7
+         !byte 6,6,6
+         !byte 5,5,5
+         !byte 4,4,4
+         !byte 3,3,3
+         !byte 2,2,2
+         !byte 1,1,1
+EndStageInitialIndexes
diff --git a/src/fx/fx.shr.80boxes.spiral.a b/src/fx/fx.shr.80boxes.spiral.a
index dfd28e36e..b16f97dd0 100644
--- a/src/fx/fx.shr.80boxes.spiral.a
+++ b/src/fx/fx.shr.80boxes.spiral.a
@@ -18,11 +18,11 @@
          !byte $F0,$F1,$F2,$F3,$F4,$F5,$F6,$F7,$F8,$F9
 
 StageInitialIndexes
-         !byte 7,0,0,0,0,0,0
-         !byte 6,0,0,0,0,0,0
-         !byte 5,0,0,0,0,0,0
-         !byte 4,0,0,0,0,0,0
-         !byte 3,0,0,0,0,0,0
-         !byte 2,0,0,0,0,0,0
-         !byte 1
+         !byte 7,7,0
+         !byte 6,6,0
+         !byte 5,5,0
+         !byte 4,4,0
+         !byte 3,3,0
+         !byte 2,2,0
+         !byte 1,1
 EndStageInitialIndexes
diff --git a/src/index/artwork.idx.a b/src/index/artwork.idx.a
index f70d5e6d0..262fda35b 100644
--- a/src/index/artwork.idx.a
+++ b/src/index/artwork.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10804736
+         !be24  10805203
          !le16     4244
diff --git a/src/index/attract.idx.a b/src/index/attract.idx.a
index b5f6c618b..a8ce849e0 100644
--- a/src/index/attract.idx.a
+++ b/src/index/attract.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10757691
+         !be24  10758139
          !le16     5223
diff --git a/src/index/cache00.idx.a b/src/index/cache00.idx.a
index 17f96af2c..aca8aa790 100644
--- a/src/index/cache00.idx.a
+++ b/src/index/cache00.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10700902
+         !be24  10701350
          !le16     3593
diff --git a/src/index/cache01.idx.a b/src/index/cache01.idx.a
index 22a7d1c4c..6bbaeb7a9 100644
--- a/src/index/cache01.idx.a
+++ b/src/index/cache01.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10713279
+         !be24  10713727
          !le16     3953
diff --git a/src/index/cache10.idx.a b/src/index/cache10.idx.a
index a8e762304..514050798 100644
--- a/src/index/cache10.idx.a
+++ b/src/index/cache10.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10728685
+         !be24  10729133
          !le16     4628
diff --git a/src/index/cache11.idx.a b/src/index/cache11.idx.a
index d5a63ff3e..68926e645 100644
--- a/src/index/cache11.idx.a
+++ b/src/index/cache11.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10745967
+         !be24  10746415
          !le16     5575
diff --git a/src/index/coverfade.idx.a b/src/index/coverfade.idx.a
index b6c7c3ca8..00d88e039 100644
--- a/src/index/coverfade.idx.a
+++ b/src/index/coverfade.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10808980
+         !be24  10809447
          !le16      410
diff --git a/src/index/credits.idx.a b/src/index/credits.idx.a
index e4af7a14c..9ee452667 100644
--- a/src/index/credits.idx.a
+++ b/src/index/credits.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10809698
+         !be24  10810165
          !le16      448
diff --git a/src/index/decrunch.idx.a b/src/index/decrunch.idx.a
index ab7d062a5..d8bc0b89c 100644
--- a/src/index/decrunch.idx.a
+++ b/src/index/decrunch.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10810146
+         !be24  10810613
          !le16      303
diff --git a/src/index/dfx.idx.a b/src/index/dfx.idx.a
index 00a67677d..c5dd2b255 100644
--- a/src/index/dfx.idx.a
+++ b/src/index/dfx.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10765060
+         !be24  10765508
          !le16     1242
diff --git a/src/index/dhgr.idx.a b/src/index/dhgr.idx.a
index d793efeb4..9bd93681a 100644
--- a/src/index/dhgr.idx.a
+++ b/src/index/dhgr.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10803406
+         !be24  10803873
          !le16     1249
diff --git a/src/index/dtitle.idx.a b/src/index/dtitle.idx.a
index 3f78870fc..68684bd60 100644
--- a/src/index/dtitle.idx.a
+++ b/src/index/dtitle.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10789396
+         !be24  10789863
          !le16      464
diff --git a/src/index/fx.idx.a b/src/index/fx.idx.a
index b6707b136..f07521090 100644
--- a/src/index/fx.idx.a
+++ b/src/index/fx.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10762914
+         !be24  10763362
          !le16     2146
diff --git a/src/index/gamehelp.idx.a b/src/index/gamehelp.idx.a
index 98e6eed46..e55077a5f 100644
--- a/src/index/gamehelp.idx.a
+++ b/src/index/gamehelp.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10766458
+         !be24  10766925
          !le16     6149
diff --git a/src/index/gr.fizzle.idx.a b/src/index/gr.fizzle.idx.a
index c666501fc..e2f6ddfbd 100644
--- a/src/index/gr.fizzle.idx.a
+++ b/src/index/gr.fizzle.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10809390
+         !be24  10809857
          !le16      107
diff --git a/src/index/gr.idx.a b/src/index/gr.idx.a
index 8be8d1153..9ec2147fd 100644
--- a/src/index/gr.idx.a
+++ b/src/index/gr.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10804655
+         !be24  10805122
          !le16       81
diff --git a/src/index/helptext.idx.a b/src/index/helptext.idx.a
index 8dbeb0d7d..3e64ec08a 100644
--- a/src/index/helptext.idx.a
+++ b/src/index/helptext.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10809497
+         !be24  10809964
          !le16      201
diff --git a/src/index/hgr0.idx.a b/src/index/hgr0.idx.a
index 2ab6b9d36..019328df1 100644
--- a/src/index/hgr0.idx.a
+++ b/src/index/hgr0.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10789860
+         !be24  10790327
          !le16     4407
diff --git a/src/index/hgr1.idx.a b/src/index/hgr1.idx.a
index 984550b4b..3c13747f5 100644
--- a/src/index/hgr1.idx.a
+++ b/src/index/hgr1.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10794267
+         !be24  10794734
          !le16     1533
diff --git a/src/index/hgr2.idx.a b/src/index/hgr2.idx.a
index 01a610c76..a9c1d8958 100644
--- a/src/index/hgr2.idx.a
+++ b/src/index/hgr2.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10795800
+         !be24  10796267
          !le16     1040
diff --git a/src/index/hgr3.idx.a b/src/index/hgr3.idx.a
index 681b57022..95a79976c 100644
--- a/src/index/hgr3.idx.a
+++ b/src/index/hgr3.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10796840
+         !be24  10797307
          !le16     3237
diff --git a/src/index/hgr4.idx.a b/src/index/hgr4.idx.a
index 413386398..ae38921cd 100644
--- a/src/index/hgr4.idx.a
+++ b/src/index/hgr4.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10800077
+         !be24  10800544
          !le16     2764
diff --git a/src/index/hgr5.idx.a b/src/index/hgr5.idx.a
index 387d69082..94459fc9e 100644
--- a/src/index/hgr5.idx.a
+++ b/src/index/hgr5.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10802841
+         !be24  10803308
          !le16      460
diff --git a/src/index/hgr6.idx.a b/src/index/hgr6.idx.a
index e43b35d98..9a9cff3cd 100644
--- a/src/index/hgr6.idx.a
+++ b/src/index/hgr6.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10803301
+         !be24  10803768
          !le16      105
diff --git a/src/index/joystick.idx.a b/src/index/joystick.idx.a
index a79087145..5d5929749 100644
--- a/src/index/joystick.idx.a
+++ b/src/index/joystick.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10810449
+         !be24  10810916
          !le16     2370
diff --git a/src/index/miniattract.idx.a b/src/index/miniattract.idx.a
index 265bca9f3..fe8f4477c 100644
--- a/src/index/miniattract.idx.a
+++ b/src/index/miniattract.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10777501
+         !be24  10777968
          !le16     6149
diff --git a/src/index/prelaunch.idx.a b/src/index/prelaunch.idx.a
index 48dd53bcc..edbfd087b 100644
--- a/src/index/prelaunch.idx.a
+++ b/src/index/prelaunch.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10751542
+         !be24  10751990
          !le16     6149
diff --git a/src/index/search00.idx.a b/src/index/search00.idx.a
index e11fc2052..6c522a759 100644
--- a/src/index/search00.idx.a
+++ b/src/index/search00.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10692870
+         !be24  10693318
          !le16     8032
diff --git a/src/index/search01.idx.a b/src/index/search01.idx.a
index 2f1539371..15813bc24 100644
--- a/src/index/search01.idx.a
+++ b/src/index/search01.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10704495
+         !be24  10704943
          !le16     8784
diff --git a/src/index/search10.idx.a b/src/index/search10.idx.a
index d947180fb..2f3352a14 100644
--- a/src/index/search10.idx.a
+++ b/src/index/search10.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10717232
+         !be24  10717680
          !le16    11453
diff --git a/src/index/search11.idx.a b/src/index/search11.idx.a
index c959171e3..b6ba043f2 100644
--- a/src/index/search11.idx.a
+++ b/src/index/search11.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10733313
+         !be24  10733761
          !le16    12654
diff --git a/src/index/sfx.idx.a b/src/index/sfx.idx.a
index 0ffe3d777..5c794edde 100644
--- a/src/index/sfx.idx.a
+++ b/src/index/sfx.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10766302
-         !le16      156
+         !be24  10766750
+         !le16      175
diff --git a/src/index/slideshow.idx.a b/src/index/slideshow.idx.a
index b1bbb7a35..52b95bf68 100644
--- a/src/index/slideshow.idx.a
+++ b/src/index/slideshow.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10772607
+         !be24  10773074
          !le16     4894
diff --git a/src/index/title.idx.a b/src/index/title.idx.a
index 4c64863c5..362dd93a4 100644
--- a/src/index/title.idx.a
+++ b/src/index/title.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  10783650
+         !be24  10784117
          !le16     5746