diff --git a/src/mame/drivers/naomi.cpp b/src/mame/drivers/naomi.cpp
index 3b9cefccbdb..2beadf7a1fa 100644
--- a/src/mame/drivers/naomi.cpp
+++ b/src/mame/drivers/naomi.cpp
@@ -5970,6 +5970,7 @@ ROM_START( wwfroyal )
 	ROM_PARAMETER( ":rom_board:segam2crypt:key", "281627c3" )
 ROM_END
 
+// secret change game version (II/III/III+) menu: in game test mode highlight EXIT then press P1+P2 buttons 2 30 times
 ROM_START( mushi2eo )
 	NAOMI_BIOS
 	NAOMI_DEFAULT_EEPROM
@@ -9911,8 +9912,8 @@ ROM_END
 /* 0150    */ GAME( 2003, mtkob2,    naomi,    naomim1, naomi,   naomi_state, naomi,   ROT0, "Sega", "Mushiking The King Of Beetle 2K3 2nd (World)", GAME_FLAGS ) // not for Japan
 // 0152 Mushiking 2K4 2ND (Japan)
 /* 0158    */ GAME( 2005, mushi2k5,  naomi,    naomim2, naomi,   naomi_state, naomi,   ROT0, "Sega", "Mushiking The King Of Beetle 2K5 1st (Japan)", GAME_FLAGS )
-/* 0164    */ GAME( 2005, mushi2eo,  mushik2e, naomim4, naomi,   naomi_state, naomi,   ROT0, "Sega", "MushiKing II - The King Of Beetle II ENG (Ver. 1.001) (World)", GAME_FLAGS ) // not for Japan
-/* 0164    */ GAME( 2005, mushik2e,  naomi,    naomim4, naomi,   naomi_state, naomi,   ROT0, "Sega", "MushiKing II - The King Of Beetle II ENG (Ver. 2.001) (World)", GAME_FLAGS ) // not for Japan
+/* 0164    */ GAME( 2005, mushi2eo,  mushik2e, naomim4, naomi,   naomi_state, naomi,   ROT0, "Sega", "Mushiking The King Of Beetles - Mushiking II / III / III+ (Ver. 1.001) (World)", GAME_FLAGS ) // not for Japan, version can be changed in secret menu
+/* 0164    */ GAME( 2005, mushik2e,  naomi,    naomim4, naomi,   naomi_state, naomi,   ROT0, "Sega", "Mushiking The King Of Beetles - Mushiking II / III / III+ (Ver. 2.001) (World)", GAME_FLAGS ) // not for Japan, version can be changed in secret menu
 /* 0166    */ GAME( 2006, zunou,     naomi,    naomim4, naomi,   naomi_state, naomi,   ROT0, "Sega", "Touch De Zunou (Japan, Rev A)", GAME_FLAGS )
 /* 0170-01 */ GAME( 2007, manicpnc,  naomi,    naomim4, naomi,   naomi_state, naomi,   ROT0, "Sega", "Manic Panic Ghosts! (USA, Export)", GAME_FLAGS )
 /* 0170    */ GAME( 2007, pokasuka,  manicpnc, naomim4, naomi,   naomi_state, naomi,   ROT0, "Sega", "Pokasuka Ghost! (Japan)", GAME_FLAGS )
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index f88a5d76e4f..aae2490dafb 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -28568,9 +28568,9 @@ mok                             // 2002.03.06 The Maze of the Kings
 monkeyba                        // 2001.05 Monkey Ball
 mslug6                          // 2006.02 Metal Slug 6
 mtkob2                          // 2003.02 MushiKing The King Of Beetle
-mushi2eo                        // 2005.?? Mushiking The King Of Beetles II ENG (Ver. 1.001)
+mushi2eo                        // 2005.?? Mushiking The King Of Beetles II / III / III+ (Ver. 1.001)
 mushi2k5                        // 2005.?? MushiKing The King Of Beetle 2K5 1st
-mushik2e                        // 2005.?? Mushiking The King Of Beetles II ENG (Ver. 2.001)
+mushik2e                        // 2005.?? Mushiking The King Of Beetles II / III / III+ (Ver. 2.001)
 mvsc2                           // 2000.03 Marvel Vs. Capcom 2 New Age of Heroes (Export, Korea) (Rev A)
 mvsc2u                          // 2000.03 Marvel Vs. Capcom 2 New Age of Heroes (USA) (Rev A)
 naomi                           // 1998.?? Naomi BIOS