diff --git a/extra/balloon-bomber/balloon-bomber-docs.factor b/extra/balloon-bomber/balloon-bomber-docs.factor
index 00c677b04e..55b8f2b85c 100644
--- a/extra/balloon-bomber/balloon-bomber-docs.factor
+++ b/extra/balloon-bomber/balloon-bomber-docs.factor
@@ -13,7 +13,7 @@ HELP: run-balloon
 
 ARTICLE: { "balloon-bomber" "balloon-bomber" } "Balloon Bomber Emulator"
 "Provides an emulation of the original 8080 Arcade Game 'Balloon Bomber'." $nl
-"More information on the arcade game can be obtained from " { $url "http://www.mameworld.net/maws/romset/ballbomb" } "." $nl
+"More information on the arcade game can be obtained from " { $url "http://www.mamedb.com/game/ballbomb" } "." $nl
 "To play the game you need the ROM files for the arcade game. They should "
 "be placed in a directory called 'ballbomb' in the location specified by "
 "the variable " { $link rom-root } ". The specific files needed are:"
diff --git a/extra/balloon-bomber/balloon-bomber.factor b/extra/balloon-bomber/balloon-bomber.factor
index 94a48695fc..afb599d951 100644
--- a/extra/balloon-bomber/balloon-bomber.factor
+++ b/extra/balloon-bomber/balloon-bomber.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2007 Chris Double.
 ! See http://factorcode.org/license.txt for BSD license.
 !
-! Balloon Bomber: http://www.mameworld.net/maws/romset/ballbomb
+! Balloon Bomber: http://www.mamedb.com/game/ballbomb
 !
 USING: kernel space-invaders ui ;
 IN: balloon-bomber
diff --git a/extra/lunar-rescue/lunar-rescue-docs.factor b/extra/lunar-rescue/lunar-rescue-docs.factor
index 837496564a..6008499bd9 100644
--- a/extra/lunar-rescue/lunar-rescue-docs.factor
+++ b/extra/lunar-rescue/lunar-rescue-docs.factor
@@ -13,7 +13,7 @@ HELP: run-lunar
 
 ARTICLE: { "lunar-rescue" "lunar-rescue" } "Lunar Rescue Emulator"
 "Provides an emulation of the original 8080 Arcade Game 'Lunar Rescue'." $nl
-"More information on the arcade game can be obtained from " { $url "http://www.mameworld.net/maws/romset/lrescue" } "." $nl
+"More information on the arcade game can be obtained from " { $url "http://www.mamedb.com/game/lrescue" } "." $nl
 "To play the game you need the ROM files for the arcade game. They should "
 "be placed in a directory called " { $snippet "lrescue" } " in the location specified by "
 "the variable " { $link rom-root } ". The specific files needed are:"
diff --git a/extra/lunar-rescue/lunar-rescue.factor b/extra/lunar-rescue/lunar-rescue.factor
index bd62e2a231..3dc2e0bae4 100644
--- a/extra/lunar-rescue/lunar-rescue.factor
+++ b/extra/lunar-rescue/lunar-rescue.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2007 Chris Double.
 ! See http://factorcode.org/license.txt for BSD license.
 !
-! Lunar Rescue: http://www.mameworld.net/maws/romset/lrescue
+! Lunar Rescue: http://www.mamedb.com/game/lrescue
 !
 USING: kernel space-invaders ui ;
 IN: lunar-rescue
diff --git a/extra/space-invaders/space-invaders-docs.factor b/extra/space-invaders/space-invaders-docs.factor
index 594b11532a..33b487c438 100644
--- a/extra/space-invaders/space-invaders-docs.factor
+++ b/extra/space-invaders/space-invaders-docs.factor
@@ -13,7 +13,7 @@ HELP: run-invaders
 
 ARTICLE: { "space-invaders" "space-invaders" } "Space Invaders Emulator"
 "Provides an emulation of the original 8080 Arcade Game 'Space Invaders'." $nl
-"More information on the arcade game can be obtained from " { $url "http://www.mameworld.net/maws/romset/invaders" } "." $nl
+"More information on the arcade game can be obtained from " { $url "http://www.mamedb.com/game/invaders" } "." $nl
 "To play the game you need the ROM files for the arcade game. They should "
 "be placed in a directory called 'invaders' in the location specified by "
 "the variable " { $link rom-root } ". The specific files needed are:"