diff --git a/res/CACHE10.IDX b/res/CACHE10.IDX
index d42ba7dd5..abc214d3a 100644
Binary files a/res/CACHE10.IDX and b/res/CACHE10.IDX differ
diff --git a/res/CACHE11.IDX b/res/CACHE11.IDX
index 920c356d0..081163e57 100644
Binary files a/res/CACHE11.IDX and b/res/CACHE11.IDX differ
diff --git a/res/GAMES.CONF b/res/GAMES.CONF
index d0fa0e218..71d1e165a 100755
--- a/res/GAMES.CONF
+++ b/res/GAMES.CONF
@@ -378,6 +378,7 @@
 10001,SHOOTING.GALLRY=Shooting Gallery
 00010,SHORT.CIRCUIT=Short Circuit
 10011,SI=Shuttle Intercept
+10041,SIGMA.SEVEN=Sigma Seven
 00060,SC=Situation Critical
 10060,SKYFOX=Skyfox
 00010,SMOOTH.MAX=Smooth Max
diff --git a/res/TITLE.HGR.UNPACKED/SIGMA.SEVEN b/res/TITLE.HGR.UNPACKED/SIGMA.SEVEN
new file mode 100644
index 000000000..61fcdc372
Binary files /dev/null and b/res/TITLE.HGR.UNPACKED/SIGMA.SEVEN differ
diff --git a/res/TITLE.HGR/SIGMA.SEVEN b/res/TITLE.HGR/SIGMA.SEVEN
new file mode 100644
index 000000000..48b0a7f60
Binary files /dev/null and b/res/TITLE.HGR/SIGMA.SEVEN differ
diff --git a/res/dsk/sigma seven 7k file PRODOS (san inc pack).po b/res/dsk/sigma seven 7k file PRODOS (san inc pack).po
new file mode 100644
index 000000000..42ce71be7
Binary files /dev/null and b/res/dsk/sigma seven 7k file PRODOS (san inc pack).po differ
diff --git a/src/index/artwork.idx.a b/src/index/artwork.idx.a
index 7cfdb9e93..a63852ee2 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  15140197
+         !be24  15139832
          !le16     5108
diff --git a/src/index/attract.idx.a b/src/index/attract.idx.a
index fc9e29297..5bbf3a1e0 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  15087149
+         !be24  15086748
          !le16     5605
diff --git a/src/index/cache00.idx.a b/src/index/cache00.idx.a
index a708ca04d..e4dc05faf 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  15022195
+         !be24  15021666
          !le16     3993
diff --git a/src/index/cache01.idx.a b/src/index/cache01.idx.a
index ef3378f07..a8b064500 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  15036263
+         !be24  15035734
          !le16     4412
diff --git a/src/index/cache10.idx.a b/src/index/cache10.idx.a
index 4330b7ebc..71c8fe449 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  15053815
-         !le16     5594
+         !be24  15053320
+         !le16     5615
diff --git a/src/index/cache11.idx.a b/src/index/cache11.idx.a
index e2cf2ccbb..8bffa6e73 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  15073872
-         !le16     6210
+         !be24  15073432
+         !le16     6231
diff --git a/src/index/count10.a b/src/index/count10.a
index 09f6e233f..940cfed0a 100644
--- a/src/index/count10.a
+++ b/src/index/count10.a
@@ -3,4 +3,4 @@
 ;
 ; This file is automatically generated
 ;
-!word      424
+!word      425
diff --git a/src/index/count11.a b/src/index/count11.a
index c8fd1b6bd..054e3f3f4 100644
--- a/src/index/count11.a
+++ b/src/index/count11.a
@@ -3,4 +3,4 @@
 ;
 ; This file is automatically generated
 ;
-!word      466
+!word      467
diff --git a/src/index/coverfade.idx.a b/src/index/coverfade.idx.a
index 6c32490e7..e2fd1ff35 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  15145305
+         !be24  15144940
          !le16      410
diff --git a/src/index/credits.idx.a b/src/index/credits.idx.a
index a13d71a18..3d1d58e4a 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  15146059
+         !be24  15145694
          !le16      448
diff --git a/src/index/decrunch.idx.a b/src/index/decrunch.idx.a
index b3a94cee4..b158b507a 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  15146507
+         !be24  15146142
          !le16      303
diff --git a/src/index/dfx.idx.a b/src/index/dfx.idx.a
index 168349664..2e2bc91dd 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  15095394
+         !be24  15094993
          !le16     1640
diff --git a/src/index/dgr.fizzle.idx.a b/src/index/dgr.fizzle.idx.a
index 9343599dc..3e145404a 100644
--- a/src/index/dgr.fizzle.idx.a
+++ b/src/index/dgr.fizzle.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  15145791
+         !be24  15145426
          !le16       67
diff --git a/src/index/dgr.idx.a b/src/index/dgr.idx.a
index df376dee0..a014d824a 100644
--- a/src/index/dgr.idx.a
+++ b/src/index/dgr.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  15140138
+         !be24  15139773
          !le16       59
diff --git a/src/index/dhgr.idx.a b/src/index/dhgr.idx.a
index c6617d5cc..a2bc65e53 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  15138604
+         !be24  15138239
          !le16     1437
diff --git a/src/index/dtitle.idx.a b/src/index/dtitle.idx.a
index f27248932..2eb853f71 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  15123411
+         !be24  15123046
          !le16      537
diff --git a/src/index/fx.idx.a b/src/index/fx.idx.a
index 55f42f076..5a4b1f4fb 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  15092754
+         !be24  15092353
          !le16     2640
diff --git a/src/index/gamehelp.idx.a b/src/index/gamehelp.idx.a
index ff46db49d..911ef9070 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  15097392
-         !le16     7067
+         !be24  15096991
+         !le16     7085
diff --git a/src/index/gr.fizzle.idx.a b/src/index/gr.fizzle.idx.a
index 647b68a0b..106cdc0b4 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  15145715
+         !be24  15145350
          !le16       76
diff --git a/src/index/gr.idx.a b/src/index/gr.idx.a
index 23a81c190..3d57e08a7 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  15140041
+         !be24  15139676
          !le16       97
diff --git a/src/index/helptext.idx.a b/src/index/helptext.idx.a
index 37a18e8a4..bdd810a14 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  15145858
+         !be24  15145493
          !le16      201
diff --git a/src/index/hgr0.idx.a b/src/index/hgr0.idx.a
index b225643db..4bcf9d2cd 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  15123948
+         !be24  15123583
          !le16     4702
diff --git a/src/index/hgr1.idx.a b/src/index/hgr1.idx.a
index 7a4395a59..531dad965 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  15128650
+         !be24  15128285
          !le16     1702
diff --git a/src/index/hgr2.idx.a b/src/index/hgr2.idx.a
index dc117c218..adbaab6bd 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  15130352
+         !be24  15129987
          !le16     1129
diff --git a/src/index/hgr3.idx.a b/src/index/hgr3.idx.a
index a6f563b2b..11c5478cf 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  15131481
+         !be24  15131116
          !le16     3388
diff --git a/src/index/hgr4.idx.a b/src/index/hgr4.idx.a
index 75050ca57..a351d3b66 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  15134869
+         !be24  15134504
          !le16     3142
diff --git a/src/index/hgr5.idx.a b/src/index/hgr5.idx.a
index ca35096a4..933293c83 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  15138011
+         !be24  15137646
          !le16      479
diff --git a/src/index/hgr6.idx.a b/src/index/hgr6.idx.a
index eb569d4b8..e78cb6b29 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  15138490
+         !be24  15138125
          !le16      114
diff --git a/src/index/joystick.idx.a b/src/index/joystick.idx.a
index a288b803e..56a4c8598 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  15146810
+         !be24  15146445
          !le16     2370
diff --git a/src/index/miniattract0.idx.a b/src/index/miniattract0.idx.a
index ba07a6199..4a81e7f61 100644
--- a/src/index/miniattract0.idx.a
+++ b/src/index/miniattract0.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  15109728
+         !be24  15109345
          !le16     4728
diff --git a/src/index/miniattract1.idx.a b/src/index/miniattract1.idx.a
index 914838141..459b400e0 100644
--- a/src/index/miniattract1.idx.a
+++ b/src/index/miniattract1.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  15114456
+         !be24  15114073
          !le16     2343
diff --git a/src/index/prelaunch.idx.a b/src/index/prelaunch.idx.a
index 9198fd554..74f3065d4 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  15080082
-         !le16     7067
+         !be24  15079663
+         !le16     7085
diff --git a/src/index/res.cover.idx.a b/src/index/res.cover.idx.a
index 349f03069..16757c23b 100644
--- a/src/index/res.cover.idx.a
+++ b/src/index/res.cover.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  4000768
+         !be24  4008960
          !le16     8192
diff --git a/src/index/res.help.idx.a b/src/index/res.help.idx.a
index db4b09b6b..8465c3a8a 100644
--- a/src/index/res.help.idx.a
+++ b/src/index/res.help.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  4017152
+         !be24  4025344
          !le16     8192
diff --git a/src/index/res.title.idx.a b/src/index/res.title.idx.a
index 59bb6aa2a..337726617 100644
--- a/src/index/res.title.idx.a
+++ b/src/index/res.title.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  4008960
+         !be24  4017152
          !le16     8192
diff --git a/src/index/search00.idx.a b/src/index/search00.idx.a
index 42ca9d44d..582c4dd9f 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  15012994
+         !be24  15012465
          !le16     9201
diff --git a/src/index/search01.idx.a b/src/index/search01.idx.a
index a87820ee6..e83dde8e5 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  15026188
+         !be24  15025659
          !le16    10075
diff --git a/src/index/search10.idx.a b/src/index/search10.idx.a
index a47438d48..74f2f2168 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  15040675
-         !le16    13140
+         !be24  15040146
+         !le16    13174
diff --git a/src/index/search11.idx.a b/src/index/search11.idx.a
index c215048a2..369184ce3 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  15059409
-         !le16    14463
+         !be24  15058935
+         !le16    14497
diff --git a/src/index/sfx.idx.a b/src/index/sfx.idx.a
index a5d813e18..600b39392 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  15097034
+         !be24  15096633
          !le16      358
diff --git a/src/index/slideshow.idx.a b/src/index/slideshow.idx.a
index 8e1649198..21d12d208 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  15104459
+         !be24  15104076
          !le16     5269
diff --git a/src/index/title.idx.a b/src/index/title.idx.a
index 341704042..7de6e40b7 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  15116799
-         !le16     6612
+         !be24  15116416
+         !le16     6630
diff --git a/src/index/xsingle.idx.a b/src/index/xsingle.idx.a
index 811e354bc..3f0ac9761 100644
--- a/src/index/xsingle.idx.a
+++ b/src/index/xsingle.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  15009031
-         !le16     3963
+         !be24  15008501
+         !le16     3964
diff --git a/src/prelaunch/sigma.seven.a b/src/prelaunch/sigma.seven.a
new file mode 100644
index 000000000..390e93c39
--- /dev/null
+++ b/src/prelaunch/sigma.seven.a
@@ -0,0 +1,29 @@
+;license:MIT
+;(c) 2022 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH.INDEXED/SIGMA.SEVEN",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+         lda   #$60
+         sta   $2044
+         jsr   $2000       ; decompress
+         +READ_RAM2_NO_WRITE
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #$2C
+         sta   $CA3        ; patch - don't decrease fuel
+         lda   #$a5
+         sta   $1044       ; patch - don't decrease lives
++
+         jsr   DisableAccelerator
+         +READ_ROM_NO_WRITE
+         jmp   $9F3A
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}