diff --git a/res/ACTION.HGR.UNCOMPRESSED/MUTANT.SW b/res/ACTION.HGR.UNCOMPRESSED/MUTANT.SW
new file mode 100644
index 000000000..cfa24fa52
Binary files /dev/null and b/res/ACTION.HGR.UNCOMPRESSED/MUTANT.SW differ
diff --git a/res/ACTION.HGR.UNCOMPRESSED/MUTANT.SW2 b/res/ACTION.HGR.UNCOMPRESSED/MUTANT.SW2
new file mode 100644
index 000000000..2868442d1
Binary files /dev/null and b/res/ACTION.HGR.UNCOMPRESSED/MUTANT.SW2 differ
diff --git a/res/ACTION.HGR/MUTANT.SW b/res/ACTION.HGR/MUTANT.SW
new file mode 100644
index 000000000..6b8f2f55b
Binary files /dev/null and b/res/ACTION.HGR/MUTANT.SW differ
diff --git a/res/ACTION.HGR/MUTANT.SW2 b/res/ACTION.HGR/MUTANT.SW2
new file mode 100644
index 000000000..f05424027
Binary files /dev/null and b/res/ACTION.HGR/MUTANT.SW2 differ
diff --git a/res/ATTRACT.CONF b/res/ATTRACT.CONF
index a9e7d72b7..bbee08de2 100644
--- a/res/ATTRACT.CONF
+++ b/res/ATTRACT.CONF
@@ -99,7 +99,7 @@ BK=0
 ACTIONMB.CONF=2
 BRODERBUND.CONF=1
 SPACE.EGGS=0
-#2
+ACTIONMNO8.CONF=2
 SHR28.CONF=5
 MOON.PATROL=0
 DHGR4.CONF=3
diff --git a/res/ATTRACT/MUTANT.SW b/res/ATTRACT/MUTANT.SW
new file mode 100644
index 000000000..d1ad1d90b
--- /dev/null
+++ b/res/ATTRACT/MUTANT.SW
@@ -0,0 +1,7 @@
+#
+# Attract mode for MUTANT.SW
+# This file is automatically generated
+#
+
+
+[eof]
diff --git a/res/CACHE00.IDX b/res/CACHE00.IDX
index 4b58a67f9..558b60b3f 100644
Binary files a/res/CACHE00.IDX and b/res/CACHE00.IDX differ
diff --git a/res/CACHE01.IDX b/res/CACHE01.IDX
index 10bbecc49..806c3c0a8 100644
Binary files a/res/CACHE01.IDX and b/res/CACHE01.IDX differ
diff --git a/res/CACHE10.IDX b/res/CACHE10.IDX
index b3ec5799b..079f65d57 100644
Binary files a/res/CACHE10.IDX and b/res/CACHE10.IDX differ
diff --git a/res/CACHE11.IDX b/res/CACHE11.IDX
index 65597c584..3a5a36f1b 100644
Binary files a/res/CACHE11.IDX and b/res/CACHE11.IDX differ
diff --git a/res/GAMEHELP/MUTANT.SW b/res/GAMEHELP/MUTANT.SW
new file mode 100644
index 000000000..88da983ea
--- /dev/null
+++ b/res/GAMEHELP/MUTANT.SW
@@ -0,0 +1,24 @@
+   Eat the dots, avoid the monsters,
+
+ eat the energy pods, eat the monsters,
+
+ activate shields, shoot the monsters,
+
+   don't get trapped by moving walls!
+
+
+          joystick or keyboard
+
+                   A
+           move  <   >  move
+                   Z
+
+        Space to activate shield
+
+    button 1 / closed apple to shoot
+
+
+Esc* * * * * * * * * * * * * * * * pause
+
+Ctrl-S * * * * * * * * * * * * * * sound
+[eof]
diff --git a/res/SS/ACTIONMNO1.CONF b/res/SS/ACTIONMNO1.CONF
index b0122bdae..b5c9e0e3e 100644
--- a/res/SS/ACTIONMNO1.CONF
+++ b/res/SS/ACTIONMNO1.CONF
@@ -11,7 +11,5 @@ NARNIA
 NEURAS
 N.O.R.A.D
 ORBITRON
-MB3=MB
-MP1=MP
 
 [eof]
diff --git a/res/SS/ACTIONMNO2.CONF b/res/SS/ACTIONMNO2.CONF
index f8f2387dd..5dd1df3af 100644
--- a/res/SS/ACTIONMNO2.CONF
+++ b/res/SS/ACTIONMNO2.CONF
@@ -11,7 +11,5 @@ MAZY2=MAZY
 NARNIA2=NARNIA
 OUTWORLD2=OUTWORLD
 MD.L10=MD
-MM2=MM
-NT
 
 [eof]
diff --git a/res/SS/ACTIONMNO3.CONF b/res/SS/ACTIONMNO3.CONF
index 92bb5fb52..9206dc50e 100644
--- a/res/SS/ACTIONMNO3.CONF
+++ b/res/SS/ACTIONMNO3.CONF
@@ -11,7 +11,5 @@ MINER.2049ER2=MINER.2049ER
 MAXWELL.MANOR2=MAXWELL.MANOR
 MAZY
 MATING.ZONE
-MAD.BOMBER
-NEON
 
 [eof]
diff --git a/res/SS/ACTIONMNO4.CONF b/res/SS/ACTIONMNO4.CONF
index 20c8bd86a..1dccd771b 100644
--- a/res/SS/ACTIONMNO4.CONF
+++ b/res/SS/ACTIONMNO4.CONF
@@ -11,7 +11,6 @@ NEPTUNE
 MINOTAUR2=MINOTAUR
 MAD.RAT
 MOUSKATTACK
-M.I.R.V
-MINE.SWEEP
+NEURAS2=NEURAS
 
 [eof]
diff --git a/res/SS/ACTIONMNO5.CONF b/res/SS/ACTIONMNO5.CONF
index 7b5e9891b..668a8a2ac 100644
--- a/res/SS/ACTIONMNO5.CONF
+++ b/res/SS/ACTIONMNO5.CONF
@@ -11,7 +11,6 @@ MINOTAUR
 MI
 MINIT.MAN2=MINIT.MAN
 N.O.R.A.D2=N.O.R.A.D
-MARAUDER
-NI
+NIBBLER
 
 [eof]
diff --git a/res/SS/ACTIONMNO7.CONF b/res/SS/ACTIONMNO7.CONF
index ee753af02..2d1218d7f 100644
--- a/res/SS/ACTIONMNO7.CONF
+++ b/res/SS/ACTIONMNO7.CONF
@@ -12,7 +12,5 @@ MAPPLE
 MINIT.MAN3=MINIT.MAN
 MD.L05=MD
 MARS.CARS
-NIBBLER
-NEURAS2=NEURAS
 
 [eof]
diff --git a/res/SS/ACTIONMNO8.CONF b/res/SS/ACTIONMNO8.CONF
new file mode 100644
index 000000000..faee96799
--- /dev/null
+++ b/res/SS/ACTIONMNO8.CONF
@@ -0,0 +1,16 @@
+#
+# action shots slideshow of games that begin with "M","N","O"
+#
+
+MB3=MB
+MP1=MP
+MM2=MM
+NT
+MAD.BOMBER
+NEON
+M.I.R.V
+MINE.SWEEP
+MARAUDER
+NI
+
+[eof]
diff --git a/res/history.md b/res/history.md
index 22d5b98a8..aed527f97 100644
--- a/res/history.md
+++ b/res/history.md
@@ -7,10 +7,16 @@
 - AntiAir
 - Fido
 - Hopman
+- Mutant (Steve Waldo)
 - Pick 'n' Pile
 - The Rocky Horror Show
 - Yewdow
 
+### Enhancements & bug fixes in v5.2
+
+- Fix launch issues in Mazeblox, Pegasus II, Super Zaxxon, The Space Ark (issues [567](https://github.com/a2-4am/4cade/issues/567), [568](https://github.com/a2-4am/4cade/issues/568), [565](https://github.com/a2-4am/4cade/issues/565), [572](https://github.com/a2-4am/4cade/issues/572))
+- Fix reset issues in Rescue Raiders, Starglider (issues [569](https://github.com/a2-4am/4cade/issues/569), [570](https://github.com/a2-4am/4cade/issues/570))
+
 ## Revision 5.1 / serial number 20240216
 
 ### Games added in v5.1
diff --git a/src/index/artwork.idx.a b/src/index/artwork.idx.a
index 1f7dc6229..3c3e00984 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  15525748
+         !be24  15531473
          !le16     5112
diff --git a/src/index/attract.idx.a b/src/index/attract.idx.a
index 97c1e98cb..251624395 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  15471566
-         !le16     5643
+         !be24  15477201
+         !le16     5662
diff --git a/src/index/cache00.idx.a b/src/index/cache00.idx.a
index df36250c6..450e73777 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  15403645
-         !le16     4059
+         !be24  15409196
+         !le16     4080
diff --git a/src/index/cache01.idx.a b/src/index/cache01.idx.a
index d4bdfd8aa..2d5f95df8 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  15418005
-         !le16     4524
+         !be24  15423577
+         !le16     4545
diff --git a/src/index/cache10.idx.a b/src/index/cache10.idx.a
index 8fd1d53b3..c71f7d893 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  15436397
-         !le16     5928
+         !be24  15441990
+         !le16     5949
diff --git a/src/index/cache11.idx.a b/src/index/cache11.idx.a
index f9454835b..5f173420e 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  15457550
-         !le16     6554
+         !be24  15463164
+         !le16     6575
diff --git a/src/index/coverfade.idx.a b/src/index/coverfade.idx.a
index 9aa8802a0..98b9ceb37 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  15530860
+         !be24  15536585
          !le16      410
diff --git a/src/index/credits.idx.a b/src/index/credits.idx.a
index 26f05e37c..7f789af48 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  15531614
+         !be24  15537339
          !le16      449
diff --git a/src/index/decrunch.idx.a b/src/index/decrunch.idx.a
index 02376ddfe..e3be5dc08 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  15532063
+         !be24  15537788
          !le16      303
diff --git a/src/index/demo.idx.a b/src/index/demo.idx.a
index 4fd990228..c788d9376 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  12319370
+         !be24  12324921
          !le16     1652
diff --git a/src/index/dfx.idx.a b/src/index/dfx.idx.a
index 4e9377651..c5ac4716b 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  15479849
+         !be24  15485503
          !le16     1640
diff --git a/src/index/dgr.fizzle.idx.a b/src/index/dgr.fizzle.idx.a
index 4c8301471..82b82bffb 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  15531346
+         !be24  15537071
          !le16       67
diff --git a/src/index/dgr.idx.a b/src/index/dgr.idx.a
index 73403fa50..0b433ad21 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  15525689
+         !be24  15531414
          !le16       59
diff --git a/src/index/dhgr.idx.a b/src/index/dhgr.idx.a
index 06affa3ac..ef22fe8a1 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  15524145
+         !be24  15529870
          !le16     1426
diff --git a/src/index/dtitle.idx.a b/src/index/dtitle.idx.a
index 9fdd0e793..de3e92c37 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  15509047
+         !be24  15514739
          !le16      557
diff --git a/src/index/fx.idx.a b/src/index/fx.idx.a
index cfd9d6028..df28341b9 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  15477209
+         !be24  15482863
          !le16     2640
diff --git a/src/index/gamehelp.idx.a b/src/index/gamehelp.idx.a
index 02020c7b0..c0a96e16c 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  15481847
+         !be24  15487501
          !le16     7462
diff --git a/src/index/gr.fizzle.idx.a b/src/index/gr.fizzle.idx.a
index a0afeeda3..8e445ae8f 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  15531270
+         !be24  15536995
          !le16       76
diff --git a/src/index/gr.idx.a b/src/index/gr.idx.a
index 8eed7f0e7..805944ebd 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  15525571
+         !be24  15531296
          !le16      118
diff --git a/src/index/helptext.idx.a b/src/index/helptext.idx.a
index b2aa05f6b..099c5481f 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  15531413
+         !be24  15537138
          !le16      201
diff --git a/src/index/hgr0.idx.a b/src/index/hgr0.idx.a
index 972a29e8d..acd6d3c75 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  15509604
+         !be24  15515296
          !le16     4319
diff --git a/src/index/hgr1.idx.a b/src/index/hgr1.idx.a
index 6572c7241..06a35c010 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  15513923
+         !be24  15519615
          !le16     1733
diff --git a/src/index/hgr2.idx.a b/src/index/hgr2.idx.a
index bc845193f..3393aab64 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  15515656
+         !be24  15521348
          !le16     1181
diff --git a/src/index/hgr3.idx.a b/src/index/hgr3.idx.a
index 294d1ce9e..0222546f9 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  15516837
-         !le16     3304
+         !be24  15522529
+         !le16     3337
diff --git a/src/index/hgr4.idx.a b/src/index/hgr4.idx.a
index df41e98a6..ce2ce6195 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  15520141
+         !be24  15525866
          !le16     3398
diff --git a/src/index/hgr5.idx.a b/src/index/hgr5.idx.a
index ea7823299..0cb3f0e93 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  15523539
+         !be24  15529264
          !le16      479
diff --git a/src/index/hgr6.idx.a b/src/index/hgr6.idx.a
index ffb311512..5e5b56661 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  15524018
+         !be24  15529743
          !le16      127
diff --git a/src/index/joystick.idx.a b/src/index/joystick.idx.a
index b78f17e8d..c4d79100b 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  15532366
+         !be24  15538091
          !le16     2370
diff --git a/src/index/miniattract0.idx.a b/src/index/miniattract0.idx.a
index 974860be9..ad777310d 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  15494610
-         !le16     5018
+         !be24  15500286
+         !le16     5034
diff --git a/src/index/miniattract1.idx.a b/src/index/miniattract1.idx.a
index f88f1f2fd..8bf08e295 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  15499628
+         !be24  15505320
          !le16     2432
diff --git a/src/index/prelaunch.idx.a b/src/index/prelaunch.idx.a
index 5ed09c9fe..0e4b60a7b 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  15464104
+         !be24  15469739
          !le16     7462
diff --git a/src/index/search00.idx.a b/src/index/search00.idx.a
index 1dde7d3a9..d11cc161a 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  15394281
+         !be24  15399832
          !le16     9364
diff --git a/src/index/search01.idx.a b/src/index/search01.idx.a
index f4afa65be..0bc49248a 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  15407704
+         !be24  15413276
          !le16    10301
diff --git a/src/index/search10.idx.a b/src/index/search10.idx.a
index 98f00b27b..d0201aefe 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  15422529
+         !be24  15428122
          !le16    13868
diff --git a/src/index/search11.idx.a b/src/index/search11.idx.a
index 88b7a4430..f0c30edd1 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  15442325
+         !be24  15447939
          !le16    15225
diff --git a/src/index/sfx.idx.a b/src/index/sfx.idx.a
index ccd5d3de9..b73d322e1 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  15481489
+         !be24  15487143
          !le16      358
diff --git a/src/index/slideshow.idx.a b/src/index/slideshow.idx.a
index 668f6c6d4..56d7aa8a9 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  15489309
-         !le16     5301
+         !be24  15494963
+         !le16     5323
diff --git a/src/index/title.idx.a b/src/index/title.idx.a
index d36835697..ce5b1e69b 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  15502060
+         !be24  15507752
          !le16     6987
diff --git a/src/index/xsingle.idx.a b/src/index/xsingle.idx.a
index 4178a6731..15e35f85c 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  15389986
+         !be24  15395537
          !le16     4295