diff --git a/res/ACTION.HGR.UNCOMPRESSED/GENESIS b/res/ACTION.HGR.UNCOMPRESSED/GENESIS
new file mode 100644
index 000000000..b2a40eeec
Binary files /dev/null and b/res/ACTION.HGR.UNCOMPRESSED/GENESIS differ
diff --git a/res/ACTION.HGR/GENESIS b/res/ACTION.HGR/GENESIS
new file mode 100644
index 000000000..5aefe513c
Binary files /dev/null and b/res/ACTION.HGR/GENESIS differ
diff --git a/res/ACTION.HGR/_FileInformation.txt b/res/ACTION.HGR/_FileInformation.txt
index 5ac70155b..9b2bfb7a5 100644
--- a/res/ACTION.HGR/_FileInformation.txt
+++ b/res/ACTION.HGR/_FileInformation.txt
@@ -253,6 +253,7 @@ GAMMA.GOBLINS5=Type(06),AuxType(3FF8),Access(C3)
 GAUNTLET=Type(06),AuxType(3FF8),Access(C3)
 GAUNTLET2=Type(06),AuxType(3FF8),Access(C3)
 GAUNTLET3=Type(06),AuxType(3FF8),Access(C3)
+GENESIS=Type(06),AuxType(3FF8),Access(C3)
 GENETIC.DRIFT=Type(06),AuxType(3FF8),Access(C3)
 GENIUS=Type(06),AuxType(3FF8),Access(C3)
 GENIUS.2=Type(06),AuxType(3FF8),Access(C3)
diff --git a/res/ATTRACT.CONF b/res/ATTRACT.CONF
index c2c4f7729..cc0e8615c 100644
--- a/res/ATTRACT.CONF
+++ b/res/ATTRACT.CONF
@@ -5,6 +5,7 @@ JUNGLE.HUNT=0
 DHGR1.CONF=3
 ACTIONPOP.CONF=2
 SAMMY.LIGHTFOOT=0
+ACTIONEFG6.CONF=2
 OTHER4.CONF=1
 SHR1.CONF=5
 
@@ -18,6 +19,7 @@ CONAN=0
 DHGR2.CONF=3
 ACTIONSG.CONF=2
 ATARI.CONF=1
+ACTIONPQR4.CONF=2
 SNEAKERS=0
 ACTIONMR2.CONF=2
 SHR2.CONF=5
@@ -32,6 +34,7 @@ STAR.BLAZER=0
 ACTDHGR15.CONF=4
 ACTIONEFG4.CONF=2
 ATARI2.CONF=1
+ACTIONPQR5.CONF=2
 BRAINTEASERBLVD=0
 ACTIONPOP2.CONF=2
 SHR3.CONF=5
@@ -46,6 +49,7 @@ LADY.TUT=0
 DHGR4.CONF=3
 ACTIONAB1.CONF=2
 CD2.CONF=1
+ACTIONAB4.CONF=2
 SPYS.DEMISE=0
 ACTIONHERO.CONF=2
 SHR4.CONF=5
@@ -60,6 +64,7 @@ CHAMP.LODERUN=0
 ACTDHGR13.CONF=4
 ACTIONHIJ4.CONF=2
 AB3.CONF=1
+ACTIONAB6.CONF=2
 AXIS.ASSASSIN=0
 ACTIONPOP3.CONF=2
 SHR5.CONF=5
@@ -74,6 +79,7 @@ VINDICATOR=0
 ACTDHGR2.CONF=4
 ACTIONEFG2.CONF=2
 S1.CONF=1
+ACTIONAB7.CONF=2
 LODE.RUNNER=0
 ACTIONMPM.CONF=2
 SHR6.CONF=5
@@ -88,6 +94,7 @@ AGENT.U.S.A=0
 ACTDHGR3.CONF=4
 ACTIONMNO3.CONF=2
 MNO1.CONF=1
+ACTIONCD5.CONF=2
 AQUATRON=0
 ACTIONPOP4.CONF=2
 SHR7.CONF=5
@@ -102,6 +109,7 @@ ALIEN.DOWNPOUR=0
 ACTDHGR4.CONF=4
 ACTIONT1.CONF=2
 T2.CONF=1
+ACTIONEFG5.CONF=2
 BUZZARD.BAIT=0
 ACTIONLR.CONF=2
 SHR8.CONF=5
@@ -115,6 +123,7 @@ CEILING.ZERO=0
 ACTDHGR5.CONF=4
 ACTIONPQR2.CONF=2
 P2.CONF=1
+ACTIONMNO4.CONF=2
 ROBOTRON.2084=0
 ACTIONPOP5.CONF=2
 SHR9.CONF=5
@@ -129,6 +138,7 @@ WAVY.NAVY=0
 ACTDHGR6.CONF=4
 ACTIONT2.CONF=2
 CD3.CONF=1
+ACTIONBH.CONF=2
 TRACK.AND.FIELD=0
 ACTION2049.CONF=2
 SHR10.CONF=5
@@ -143,6 +153,7 @@ CHOPLIFTER=0
 ACTDHGR7.CONF=4
 ACTIONEFG1.CONF=2
 HIJKL2.CONF=1
+ACTIONT5.CONF=2
 THE.GOONIES=0
 ACTIONSGII.CONF=2
 SHR11.CONF=5
@@ -157,6 +168,7 @@ KARATEKA=0
 ACTDHGR8.CONF=4
 ACTIONS2.CONF=2
 S2.CONF=1
+DHGR5.CONF=3
 SNAKE.BYTE=0
 ACTIONMR1.CONF=2
 SHR12.CONF=5
@@ -170,6 +182,7 @@ ALIEN.TYPHOON=0
 ACTDHGR9.CONF=4
 ACTIONCD2.CONF=2
 GEBELLI.CONF=1
+DHGR6.CONF=3
 SERPENTINE=0
 ACTIONWG.CONF=2
 SHR13.CONF=5
@@ -184,6 +197,7 @@ FLIP.OUT=0
 ACTDHGR10.CONF=4
 ACTIONCD1.CONF=2
 QR.CONF=1
+DHGREPYX.CONF=3
 PLASMANIA=0
 ACTIONMHS.CONF=2
 SHR14.CONF=5
@@ -200,6 +214,7 @@ ACTIONCD3.CONF=2
 OTHER1.CONF=1
 SPY.HUNTER=0
 ACTIONBL.CONF=2
+S4.CONF=1
 SHR15.CONF=5
 
 # set 16
@@ -214,6 +229,7 @@ ACTIONCAPT.CONF=2
 MNO3.CONF=1
 TUBEWAY=0
 ACTIONANKH.CONF=2
+ACCESS.CONF=1
 SHR16.CONF=5
 
 # set 17
@@ -228,6 +244,7 @@ ACTIONAB2.CONF=2
 AB2.CONF=1
 SPARE.CHANGE=0
 ACTIONDD.CONF=2
+T3.CONF=1
 SHR17.CONF=5
 
 # set 18
@@ -242,6 +259,7 @@ ACTIONS3.CONF=2
 S3.CONF=1
 STARGATE=0
 ACTIONTH.CONF=2
+SIRIUS3.CONF=1
 SHR18.CONF=5
 
 # set 19
@@ -256,6 +274,7 @@ ACTIONMZR.CONF=2
 OTHER6.CONF=1
 GUMBALL=0
 ACTIONKN.CONF=2
+EFG3.CONF=1
 SHR19.CONF=5
 
 # set 20
@@ -272,39 +291,21 @@ N.O.R.A.D=0
 ACTIONMR2.CONF=2
 SHR20.CONF=5
 
-# unsorted
-ACTGR1.CONF=6
-SHR21.CONF=5
-ACTDHGR18.CONF=4
-ACTDHGRTD.CONF=4
-DHGR5.CONF=3
-DHGR6.CONF=3
-DHGREPYX.CONF=3
-ACTIONPQR4.CONF=2
-ACTIONPQR5.CONF=2
-ACTIONAB4.CONF=2
-ACTIONAB6.CONF=2
-ACTIONAB7.CONF=2
-ACTIONCD5.CONF=2
-ACTIONEFG5.CONF=2
-ACTIONMNO4.CONF=2
-ACTIONBH.CONF=2
-ACTIONBH2.CONF=2
-ACTIONROM.CONF=2
-ACTIONT4.CONF=2
-ACTIONT5.CONF=2
-ACTIONEFG6.CONF=2
+# set 21
 CD4.CONF=1
-OTHER7.CONF=1
-OTHER8.CONF=1
-S4.CONF=1
-ACCESS.CONF=1
-T3.CONF=1
-SIRIUS3.CONF=1
 LASER.BOUNCE=0
+ACTDHGRTD.CONF=4
+OTHER8.CONF=1
 LAZER.SILK=0
+ACTIONROM.CONF=2
 NIGHT.STALKER=0
+ACTDHGR18.CONF=4
+ACTIONT4.CONF=2
+OTHER7.CONF=1
 NIGHTMARE=0
+ACTIONBH2.CONF=2
+SHR21.CONF=5
+ACTGR1.CONF=6
 
 [eof]
 
diff --git a/res/ATTRACT/GENESIS b/res/ATTRACT/GENESIS
new file mode 100644
index 000000000..65d0619a1
--- /dev/null
+++ b/res/ATTRACT/GENESIS
@@ -0,0 +1,8 @@
+#
+# Attract mode for GENESIS
+# This file is automatically generated
+#
+
+ACTION.HGR/GENESIS=A
+
+[eof]
diff --git a/res/ATTRACT/_FileInformation.txt b/res/ATTRACT/_FileInformation.txt
index a33f44e3f..39d1c7bcf 100644
--- a/res/ATTRACT/_FileInformation.txt
+++ b/res/ATTRACT/_FileInformation.txt
@@ -111,6 +111,7 @@ G.I.JOE=Type(04),AuxType(8000),Access(C3)
 GALAXY.GATES=Type(04),AuxType(8000),Access(C3)
 GAMMA.GOBLINS=Type(04),AuxType(8000),Access(C3)
 GAUNTLET=Type(04),AuxType(8000),Access(C3)
+GENESIS=Type(04),AuxType(8000),Access(C3)
 GENETIC.DRIFT=Type(04),AuxType(8000),Access(C3)
 GENIUS=Type(04),AuxType(8000),Access(C3)
 GENIUS.2=Type(04),AuxType(8000),Access(C3)
diff --git a/res/SS/ACTIONEFG6.CONF b/res/SS/ACTIONEFG6.CONF
index 54571e7a7..5a87a50ff 100644
--- a/res/SS/ACTIONEFG6.CONF
+++ b/res/SS/ACTIONEFG6.CONF
@@ -5,6 +5,7 @@
 GUMBALL
 FIGHT.NIGHT
 FREE.FALL
+GENESIS
 FORMULA.1.RACER
 GUARDIAN
 FALCONS
diff --git a/res/SS/DATASOFT2.CONF b/res/SS/DATASOFT2.CONF
index 00314d0ca..4b8f83b3b 100644
--- a/res/SS/DATASOFT2.CONF
+++ b/res/SS/DATASOFT2.CONF
@@ -11,5 +11,6 @@ LOST.TOMB
 ORILEYS.MINE
 MR.COOL
 SARACEN
+GENESIS
 
 [eof]
diff --git a/res/SS/EFG1.CONF b/res/SS/EFG1.CONF
index a106c1698..a858bd758 100644
--- a/res/SS/EFG1.CONF
+++ b/res/SS/EFG1.CONF
@@ -12,6 +12,5 @@ GENETIC.DRIFT
 FS2
 THE.GOONIES
 GAMMA.GOBLINS
-GHOSTBUSTERS
 
 [eof]
diff --git a/res/SS/EFG2.CONF b/res/SS/EFG2.CONF
index 566bb78b1..b2575f0a0 100644
--- a/res/SS/EFG2.CONF
+++ b/res/SS/EFG2.CONF
@@ -12,8 +12,5 @@ FORMULA.1.RACER
 FORCE.7
 GOLD.RUSH
 GALAXY.GATES
-G.I.JOE
-FAT.CITY
-EXTERMINATOR
 
 [eof]
diff --git a/res/SS/EFG3.CONF b/res/SS/EFG3.CONF
new file mode 100644
index 000000000..0be3d4e3a
--- /dev/null
+++ b/res/SS/EFG3.CONF
@@ -0,0 +1,11 @@
+#
+# slideshow of games that begin with "E","F","G"
+#
+
+G.I.JOE
+FAT.CITY
+EXTERMINATOR
+GHOSTBUSTERS
+GENESIS
+
+[eof]
diff --git a/res/SS/_FileInformation.txt b/res/SS/_FileInformation.txt
index 8a956d1d8..17ac4288e 100644
--- a/res/SS/_FileInformation.txt
+++ b/res/SS/_FileInformation.txt
@@ -124,6 +124,7 @@ DHGREPYX.CONF=Type(04),AuxType(4000),Access(C3)
 EA.CONF=Type(04),AuxType(4000),Access(C3)
 EFG1.CONF=Type(04),AuxType(4000),Access(C3)
 EFG2.CONF=Type(04),AuxType(4000),Access(C3)
+EFG3.CONF=Type(04),AuxType(4000),Access(C3)
 EPYX.CONF=Type(04),AuxType(4000),Access(C3)
 FAVORITES1.CONF=Type(04),AuxType(4000),Access(C3)
 FAVORITES2.CONF=Type(04),AuxType(4000),Access(C3)
diff --git a/src/constants.a b/src/constants.a
index 99f2d9dc6..f0cbeb87c 100644
--- a/src/constants.a
+++ b/src/constants.a
@@ -6,7 +6,7 @@
 ; YE OLDE GRAND UNIFIED MEMORY MAP
 ;
 ; LC RAM BANK 1
-; D000..E7F9 - persistent data structures (gGlobalPrefsStore, gGamesListStore)
+; D000..E805 - persistent data structures (gGlobalPrefsStore, gGamesListStore)
 ; ...unused...
 ; E91E..FFF1 - main program code
 ; FFF2..FFF9 - API functions and global constants available for main program
@@ -144,4 +144,4 @@ CHEATS_ENABLED = %00001000
 
 ; hacks
 LoadFileDirect = $DAFB
-launchpatch    = $D613
\ No newline at end of file
+launchpatch    = $D613