diff --git a/disks/pcx86/games/infocom/README.md b/disks/pcx86/games/infocom/README.md
index 8e9cd1445..176a6c5b1 100644
--- a/disks/pcx86/games/infocom/README.md
+++ b/disks/pcx86/games/infocom/README.md
@@ -7,9 +7,9 @@ permalink: /disks/pcx86/games/infocom/
 Infocom Games
 -------------
 
-* [The Hitchhiker's Guide to the Galaxy](hhiker/)
-* [Leather Goddesses of Phobos](phobos/)
-* [Planetfall](planet/)
-* [Zork I: The Great Underground Empire](zork1/)
-* [Zork II: The Wizard of Frobozz](zork2/)
-* [Zork III: The Dungeon Master](zork3/)
+* [The Hitchhiker's Guide to the Galaxy (1984)](hhiker/)
+* [Leather Goddesses of Phobos (1986)](phobos/)
+* [Planetfall (1983)](planet/)
+* [Zork I: The Great Underground Empire (1982)](zork1/)
+* [Zork II: The Wizard of Frobozz (1983)](zork2/)
+* [Zork III: The Dungeon Master (1983)](zork3/)
diff --git a/disks/pcx86/games/infocom/zork1/manifest.xml b/disks/pcx86/games/infocom/zork1/manifest.xml
index 1ea2561e5..82d0ac717 100644
--- a/disks/pcx86/games/infocom/zork1/manifest.xml
+++ b/disks/pcx86/games/infocom/zork1/manifest.xml
@@ -6,7 +6,7 @@
 	<type>Game</type>
 	<category>Text Adventure</category>
 	<author>Infocom</author>
-	<releaseDate/>
+	<releaseDate>1982</releaseDate>
 	<machine href="/disks/pcx86/games/infocom/machine.xml"/>
 	<disk id="disk01" href="/disks/pcx86/games/infocom/zork1/ZORK1-READONLY.json" md5="e18d730285f6f8ae00d89e8e6ee8f3c7" md5json="d99fe5bf8d8ac1f177e360ca72fe3d7b"/>
 </manifest>
diff --git a/disks/pcx86/games/infocom/zork2/manifest.xml b/disks/pcx86/games/infocom/zork2/manifest.xml
index a0ec09719..4a6fd29f2 100644
--- a/disks/pcx86/games/infocom/zork2/manifest.xml
+++ b/disks/pcx86/games/infocom/zork2/manifest.xml
@@ -6,7 +6,7 @@
 	<type>Game</type>
 	<category>Text Adventure</category>
 	<author>Infocom</author>
-	<releaseDate/>
+	<releaseDate>1983</releaseDate>
 	<machine href="/disks/pcx86/games/infocom/machine.xml"/>
 	<disk id="disk01" href="/disks/pcx86/games/infocom/zork2/ZORK2-READONLY.json" md5="6e7de3627c62747ee0f5832aecad579e" md5json="fae9022e4cb5da794916b332ec8a55c3"/>
 </manifest>
diff --git a/disks/pcx86/games/infocom/zork3/manifest.xml b/disks/pcx86/games/infocom/zork3/manifest.xml
index 47842fcdd..ee406227c 100644
--- a/disks/pcx86/games/infocom/zork3/manifest.xml
+++ b/disks/pcx86/games/infocom/zork3/manifest.xml
@@ -6,7 +6,7 @@
 	<type>Game</type>
 	<category>Text Adventure</category>
 	<author>Infocom</author>
-	<releaseDate/>
+	<releaseDate>1983</releaseDate>
 	<machine href="/disks/pcx86/games/infocom/machine.xml"/>
 	<disk id="disk01" href="/disks/pcx86/games/infocom/zork3/ZORK3-READONLY.json" md5="14f97d195c66295b28aa517af0bac267" md5json="9fd91ee3dc667728d76051f171020740"/>
 </manifest>