diff --git a/res/CACHE10.IDX b/res/CACHE10.IDX
index ca266e5b1..5ae6e8d41 100644
Binary files a/res/CACHE10.IDX and b/res/CACHE10.IDX differ
diff --git a/res/CACHE11.IDX b/res/CACHE11.IDX
index 6916f7889..920b622ed 100644
Binary files a/res/CACHE11.IDX and b/res/CACHE11.IDX differ
diff --git a/res/GAMES.CONF b/res/GAMES.CONF
index 9e2228430..26f65031c 100755
--- a/res/GAMES.CONF
+++ b/res/GAMES.CONF
@@ -112,6 +112,7 @@
 01170,CATACOMBS=Catacombs
 00010,CAVRN.CREATURES=Cavern Creatures
 10010,CC=Caverns of Callisto
+10041,CAVIT=Cavit
 10011,CEILING.ZERO=Ceiling Zero
 10011,CENTIPEDE=Centipede
 00010,CL=Championship Lode Runner
@@ -279,6 +280,7 @@
 01110,MS=Matterhorn Screamer
 10000,MAXWELL.MANOR=Maxwell Manor
 10050,MAZEBLOX=Mazeblox
+10041,MAZY=Mazy
 00000,MEGABOTS=Megabots
 10011,MICRO.INVADERS=Micro Invaders
 00010,MICROWAVE=Microwave
@@ -302,6 +304,7 @@
 00001,NARNIA=Narnia
 00040,NEON=Neon
 00011,NEPTUNE=Neptune
+10041,NEURAS=Neuras
 00071,NT=Neut Tower
 10000,NEUTRONS=Neutrons
 00041,NIBBLER=Nibbler
@@ -373,6 +376,7 @@
 00011,ROBOTRON.2084=Robotron 2084
 00010,ROUND.ABOUT=Round About
 00010,RUN.FOR.IT=Run For It
+10011,RUPTUS=Ruptus
 00011,RUSSKI.DUCK=Russki Duck
 00021,SABOTAGE=Sabotage
 10011,SABOTAGE.II=Sabotage II
diff --git a/res/TITLE.HGR.UNPACKED/CAVIT b/res/TITLE.HGR.UNPACKED/CAVIT
new file mode 100644
index 000000000..a5eb6cd33
Binary files /dev/null and b/res/TITLE.HGR.UNPACKED/CAVIT differ
diff --git a/res/TITLE.HGR.UNPACKED/MAZY b/res/TITLE.HGR.UNPACKED/MAZY
new file mode 100644
index 000000000..7075b9cd6
Binary files /dev/null and b/res/TITLE.HGR.UNPACKED/MAZY differ
diff --git a/res/TITLE.HGR.UNPACKED/NEURAS b/res/TITLE.HGR.UNPACKED/NEURAS
new file mode 100644
index 000000000..8461eb31a
Binary files /dev/null and b/res/TITLE.HGR.UNPACKED/NEURAS differ
diff --git a/res/TITLE.HGR.UNPACKED/RUPTUS b/res/TITLE.HGR.UNPACKED/RUPTUS
new file mode 100644
index 000000000..4422b4740
Binary files /dev/null and b/res/TITLE.HGR.UNPACKED/RUPTUS differ
diff --git a/res/TITLE.HGR/CAVIT b/res/TITLE.HGR/CAVIT
new file mode 100644
index 000000000..c178a04d8
Binary files /dev/null and b/res/TITLE.HGR/CAVIT differ
diff --git a/res/TITLE.HGR/MAZY b/res/TITLE.HGR/MAZY
new file mode 100644
index 000000000..28c667dd0
Binary files /dev/null and b/res/TITLE.HGR/MAZY differ
diff --git a/res/TITLE.HGR/NEURAS b/res/TITLE.HGR/NEURAS
new file mode 100644
index 000000000..0d77697ad
Binary files /dev/null and b/res/TITLE.HGR/NEURAS differ
diff --git a/res/TITLE.HGR/RUPTUS b/res/TITLE.HGR/RUPTUS
new file mode 100644
index 000000000..f9ee08f32
Binary files /dev/null and b/res/TITLE.HGR/RUPTUS differ
diff --git a/res/dsk/cavit 8k file PRODOS (san inc pack).po b/res/dsk/cavit 8k file PRODOS (san inc pack).po
new file mode 100644
index 000000000..d4cccbb55
Binary files /dev/null and b/res/dsk/cavit 8k file PRODOS (san inc pack).po differ
diff --git a/res/dsk/mazy 5k file PRODOS (san inc pack).po b/res/dsk/mazy 5k file PRODOS (san inc pack).po
new file mode 100644
index 000000000..4edbfb295
Binary files /dev/null and b/res/dsk/mazy 5k file PRODOS (san inc pack).po differ
diff --git a/res/dsk/neuras 6k file PRODOS (san inc pack).po b/res/dsk/neuras 6k file PRODOS (san inc pack).po
new file mode 100644
index 000000000..c1c42f7a6
Binary files /dev/null and b/res/dsk/neuras 6k file PRODOS (san inc pack).po differ
diff --git a/res/dsk/ruptus 8k file PRODOS (san inc pack).po b/res/dsk/ruptus 8k file PRODOS (san inc pack).po
new file mode 100644
index 000000000..a52b0c4ec
Binary files /dev/null and b/res/dsk/ruptus 8k file PRODOS (san inc pack).po differ
diff --git a/src/index/artwork.idx.a b/src/index/artwork.idx.a
index 8faf5ed80..9f0a68cdf 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  15327511
+         !be24  15388920
          !le16     5112
diff --git a/src/index/attract.idx.a b/src/index/attract.idx.a
index 513b2b4b6..a5a26e25b 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  15273768
+         !be24  15335079
          !le16     5642
diff --git a/src/index/cache00.idx.a b/src/index/cache00.idx.a
index 2c4ae9665..e476558e8 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  15207405
+         !be24  15268413
          !le16     4033
diff --git a/src/index/cache01.idx.a b/src/index/cache01.idx.a
index b7309b23c..9920a681b 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  15221587
+         !be24  15282595
          !le16     4473
diff --git a/src/index/cache10.idx.a b/src/index/cache10.idx.a
index 7ad07f1f6..c699d4399 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  15239558
-         !le16     5765
+         !be24  15300656
+         !le16     5802
diff --git a/src/index/cache11.idx.a b/src/index/cache11.idx.a
index b4632553c..aa4990c70 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  15260145
-         !le16     6364
+         !be24  15321370
+         !le16     6401
diff --git a/src/index/count10.a b/src/index/count10.a
index 55cce3308..a7000fb87 100644
--- a/src/index/count10.a
+++ b/src/index/count10.a
@@ -3,4 +3,4 @@
 ;
 ; This file is automatically generated
 ;
-!word      437
+!word      441
diff --git a/src/index/count11.a b/src/index/count11.a
index b6abd6322..b2fc826c1 100644
--- a/src/index/count11.a
+++ b/src/index/count11.a
@@ -3,4 +3,4 @@
 ;
 ; This file is automatically generated
 ;
-!word      479
+!word      483
diff --git a/src/index/coverfade.idx.a b/src/index/coverfade.idx.a
index a121e29d1..81ee63940 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  15332623
+         !be24  15394032
          !le16      410
diff --git a/src/index/credits.idx.a b/src/index/credits.idx.a
index 1121f3dd5..2757ab4ad 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  15333377
+         !be24  15394786
          !le16      448
diff --git a/src/index/decrunch.idx.a b/src/index/decrunch.idx.a
index c4dcda88e..ca5e21e98 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  15333825
+         !be24  15395234
          !le16      303
diff --git a/src/index/demo.idx.a b/src/index/demo.idx.a
index ad8403be6..6b0225ec2 100644
--- a/src/index/demo.idx.a
+++ b/src/index/demo.idx.a
@@ -4,5 +4,5 @@
 ; This file is automatically generated
 ;
          !byte 0
-         !be24  12218175
+         !be24  12249407
          !le16     1652
diff --git a/src/index/dfx.idx.a b/src/index/dfx.idx.a
index 28b9e524f..4abd320ee 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  15282050
+         !be24  15343361
          !le16     1640
diff --git a/src/index/dgr.fizzle.idx.a b/src/index/dgr.fizzle.idx.a
index ca37bab87..7b53c735a 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  15333109
+         !be24  15394518
          !le16       67
diff --git a/src/index/dgr.idx.a b/src/index/dgr.idx.a
index 7eb16d439..f2bdf0e09 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  15327452
+         !be24  15388861
          !le16       59
diff --git a/src/index/dhgr.idx.a b/src/index/dhgr.idx.a
index d2e17dd95..01a84df80 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  15325945
+         !be24  15387354
          !le16     1410
diff --git a/src/index/dtitle.idx.a b/src/index/dtitle.idx.a
index b7ca53880..80a56caf6 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  15310563
+         !be24  15371972
          !le16      540
diff --git a/src/index/fx.idx.a b/src/index/fx.idx.a
index 018d25493..9c228f454 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  15279410
+         !be24  15340721
          !le16     2640
diff --git a/src/index/gamehelp.idx.a b/src/index/gamehelp.idx.a
index 2f1b59831..11fd89482 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  15284048
-         !le16     7259
+         !be24  15345359
+         !le16     7308
diff --git a/src/index/gr.fizzle.idx.a b/src/index/gr.fizzle.idx.a
index 36fcf2179..9795879b4 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  15333033
+         !be24  15394442
          !le16       76
diff --git a/src/index/gr.idx.a b/src/index/gr.idx.a
index 9679ef6dc..5e0188e03 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  15327355
+         !be24  15388764
          !le16       97
diff --git a/src/index/helptext.idx.a b/src/index/helptext.idx.a
index fe92e6a73..60b7e3042 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  15333176
+         !be24  15394585
          !le16      201
diff --git a/src/index/hgr0.idx.a b/src/index/hgr0.idx.a
index 04e6ab5b6..024e83f56 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  15311103
+         !be24  15372512
          !le16     4702
diff --git a/src/index/hgr1.idx.a b/src/index/hgr1.idx.a
index 270045c36..9a2e93401 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  15315805
+         !be24  15377214
          !le16     1715
diff --git a/src/index/hgr2.idx.a b/src/index/hgr2.idx.a
index d8deb9e30..4a6703b0e 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  15317520
+         !be24  15378929
          !le16     1129
diff --git a/src/index/hgr3.idx.a b/src/index/hgr3.idx.a
index ca4b8f46d..c0409d93c 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  15318649
+         !be24  15380058
          !le16     3371
diff --git a/src/index/hgr4.idx.a b/src/index/hgr4.idx.a
index 957337ea7..098ed59ba 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  15322020
+         !be24  15383429
          !le16     3332
diff --git a/src/index/hgr5.idx.a b/src/index/hgr5.idx.a
index de9eaa88b..c9bbe0122 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  15325352
+         !be24  15386761
          !le16      479
diff --git a/src/index/hgr6.idx.a b/src/index/hgr6.idx.a
index 847b8ac9d..7ed382167 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  15325831
+         !be24  15387240
          !le16      114
diff --git a/src/index/joystick.idx.a b/src/index/joystick.idx.a
index 59d525cb7..be367eef1 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  15334128
+         !be24  15395537
          !le16     2370
diff --git a/src/index/miniattract0.idx.a b/src/index/miniattract0.idx.a
index 33e155854..c100b5d8e 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  15296619
+         !be24  15357979
          !le16     4756
diff --git a/src/index/miniattract1.idx.a b/src/index/miniattract1.idx.a
index e9e33fc4d..68b3cdf99 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  15301375
+         !be24  15362735
          !le16     2387
diff --git a/src/index/prelaunch.idx.a b/src/index/prelaunch.idx.a
index a8acfa70d..9d23cbd59 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  15266509
-         !le16     7259
+         !be24  15327771
+         !le16     7308
diff --git a/src/index/res.cover.idx.a b/src/index/res.cover.idx.a
index 83304d56b..ec5292142 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  4102145
+         !be24  4133377
          !le16     8192
diff --git a/src/index/res.help.idx.a b/src/index/res.help.idx.a
index 3218ee4b3..344e23bd6 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  4118529
+         !be24  4149761
          !le16     8192
diff --git a/src/index/res.title.idx.a b/src/index/res.title.idx.a
index 3e07609c0..5640270bd 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  4110337
+         !be24  4141569
          !le16     8192
diff --git a/src/index/search00.idx.a b/src/index/search00.idx.a
index eb083da83..9ccccb553 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  15198160
+         !be24  15259168
          !le16     9245
diff --git a/src/index/search01.idx.a b/src/index/search01.idx.a
index a01555e03..4a1859a58 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  15211438
+         !be24  15272446
          !le16    10149
diff --git a/src/index/search10.idx.a b/src/index/search10.idx.a
index 7c64b3feb..617348f61 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  15226060
-         !le16    13498
+         !be24  15287068
+         !le16    13588
diff --git a/src/index/search11.idx.a b/src/index/search11.idx.a
index 417d3f123..42b1422ca 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  15245323
-         !le16    14822
+         !be24  15306458
+         !le16    14912
diff --git a/src/index/sfx.idx.a b/src/index/sfx.idx.a
index ed0b70112..fe409244a 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  15283690
+         !be24  15345001
          !le16      358
diff --git a/src/index/slideshow.idx.a b/src/index/slideshow.idx.a
index 98f7fb7b2..dea1412f8 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  15291307
+         !be24  15352667
          !le16     5312
diff --git a/src/index/title.idx.a b/src/index/title.idx.a
index 0d26e5987..895eac067 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  15303762
-         !le16     6801
+         !be24  15365122
+         !le16     6850
diff --git a/src/index/xsingle.idx.a b/src/index/xsingle.idx.a
index 324227293..c98248cb3 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  15194036
-         !le16     4124
+         !be24  15254987
+         !le16     4181
diff --git a/src/prelaunch/cavit.a b/src/prelaunch/cavit.a
new file mode 100644
index 000000000..0c75623c1
--- /dev/null
+++ b/src/prelaunch/cavit.a
@@ -0,0 +1,29 @@
+;license:MIT
+;(c) 2023 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH.INDEXED/CAVIT",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+
+         lda   #$60
+         sta   $813
+         jsr   $800       ; decompress
+
+         +GET_MACHINE_STATUS
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #$AD
+         sta   $40D9      ; patch - don't decrease lives
+         sta   $4088      ; patch - don't decrease time
++
+
+         +DISABLE_ACCEL
+         jmp   $4000
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}
diff --git a/src/prelaunch/mazy.a b/src/prelaunch/mazy.a
new file mode 100644
index 000000000..fabc233a1
--- /dev/null
+++ b/src/prelaunch/mazy.a
@@ -0,0 +1,29 @@
+;license:MIT
+;(c) 2023 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH.INDEXED/MAZY",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+
+         lda   #$60
+         sta   $813
+         jsr   $800       ; decompress
+
+         +GET_MACHINE_STATUS
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #$AD
+         sta   $70FB      ; patch - don't decrease lives
+         sta   $70B4      ; patch - don't decrease time
++
+
+         +DISABLE_ACCEL
+         jmp   $7000
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}
diff --git a/src/prelaunch/neuras.a b/src/prelaunch/neuras.a
new file mode 100644
index 000000000..c5cda004f
--- /dev/null
+++ b/src/prelaunch/neuras.a
@@ -0,0 +1,29 @@
+;license:MIT
+;(c) 2023 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH.INDEXED/NEURAS",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+
+         lda   #$60
+         sta   $813
+         jsr   $800       ; decompress
+
+         +GET_MACHINE_STATUS
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #$AD
+         sta   $40A8      ; patch - don't decrease lives
+         sta   $40CB      ; patch - don't decrease time
++
+
+         +DISABLE_ACCEL
+         jmp   $4000
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}
diff --git a/src/prelaunch/ruptus.a b/src/prelaunch/ruptus.a
new file mode 100644
index 000000000..b0e29c019
--- /dev/null
+++ b/src/prelaunch/ruptus.a
@@ -0,0 +1,29 @@
+;license:MIT
+;(c) 2023 by qkumba
+
+!cpu 6502
+!to "build/PRELAUNCH.INDEXED/RUPTUS",plain
+*=$106
+
+    !source "src/prelaunch/common.a"
+
+         +ENABLE_ACCEL
+
+         lda   #$60
+         sta   $813
+         jsr   $800       ; decompress
+
+         +GET_MACHINE_STATUS
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #$AD
+         sta   $40A4      ; patch - don't decrease lives
+         sta   $611E      ; patch - don't increase lives
++
+
+         +DISABLE_ACCEL
+         jmp   $4000
+
+!if * > $1C0 {
+  !error "code is too large, ends at ", *
+}