Index: binaries/data/mods/public/gui/gamesetup/gamesetup.js
===================================================================
--- binaries/data/mods/public/gui/gamesetup/gamesetup.js
+++ binaries/data/mods/public/gui/gamesetup/gamesetup.js
@@ -921,6 +921,9 @@
 	},
 };
 
+// bool to indicate more options are shown
+let g_MoreOptionsShown = false;
+
 /**
  * Initializes some globals without touching the GUI.
  *
@@ -2162,8 +2165,17 @@
 	Engine.GetGUIObjectByName("chatText").caption = g_ChatMessages.join("\n");
 }
 
+function cancelKey()
+{
+	if (g_MoreOptionsShown)
+		showMoreOptions(false);
+	else
+		cancelSetup();
+}
+
 function showMoreOptions(show)
 {
+	g_MoreOptionsShown = show;
 	Engine.GetGUIObjectByName("moreOptionsFade").hidden = !show;
 	Engine.GetGUIObjectByName("moreOptions").hidden = !show;
 }
Index: binaries/data/mods/public/gui/gamesetup/gamesetup.xml
===================================================================
--- binaries/data/mods/public/gui/gamesetup/gamesetup.xml
+++ binaries/data/mods/public/gui/gamesetup/gamesetup.xml
@@ -14,6 +14,10 @@
 	<!-- After settings.js, which defines g_Settings -->
 	<script file="gui/gamesetup/gamesetup.js"/>
 
+	<object hotkey="cancel">
+		<action on="Press">cancelKey();</action>
+	</object>
+
 	<!-- Add a translucent black background to fade out the menu page -->
 	<object type="image" style="ModernWindow" size="0 0 100% 100%">
 
@@ -351,7 +355,6 @@
 					style="StoneButton"
 					size="50%-70 428 50%+70 456"
 					tooltip_style="onscreenToolTip"
-					hotkey="cancel"
 				>
 					<translatableAttribute id="caption">OK</translatableAttribute>
 					<translatableAttribute id="tooltip">Close more game options window</translatableAttribute>
Index: binaries/data/mods/public/gui/lobby/lobby.xml
===================================================================
--- binaries/data/mods/public/gui/lobby/lobby.xml
+++ binaries/data/mods/public/gui/lobby/lobby.xml
@@ -180,7 +180,7 @@
 				</action>
 			</object>
 
-			<object type="button" style="ModernButtonRed" size="0 100%-25 100% 100%">
+			<object type="button" style="ModernButtonRed" size="0 100%-25 100% 100%" hotkey="cancel">
 				<translatableAttribute id="caption">Main Menu</translatableAttribute>
 				<action on="Press">returnToMainMenu();</action>
 			</object>
Index: binaries/data/mods/public/gui/options/options.xml
===================================================================
--- binaries/data/mods/public/gui/options/options.xml
+++ binaries/data/mods/public/gui/options/options.xml
@@ -99,7 +99,7 @@
 			<translatableAttribute id="tooltip">Saves changes</translatableAttribute>
 			<action on="Press">saveChanges();</action>
 		</object>
-		<object type="button" style="ModernButtonRed" size="50%+136 100%-44 50%+236 100%-16">
+		<object type="button" style="ModernButtonRed" size="50%+136 100%-44 50%+236 100%-16" hotkey="cancel">
 			<translatableAttribute id="caption">Close</translatableAttribute>
 			<translatableAttribute id="tooltip">Unsaved changes affect this session only</translatableAttribute>
 			<action on="Press">closePage();</action>
Index: binaries/data/mods/public/gui/replaymenu/replay_menu.xml
===================================================================
--- binaries/data/mods/public/gui/replaymenu/replay_menu.xml
+++ binaries/data/mods/public/gui/replaymenu/replay_menu.xml
@@ -235,7 +235,7 @@
 		<object name="bottomPanel" size="25 100%-55 100%-5 100%-25" >
 
 			<!-- Main Menu Button -->
-			<object type="button" style="StoneButton" size="25 0 17%+25 100%">
+			<object type="button" style="StoneButton" size="25 0 17%+25 100%" hotkey="cancel">
 				<translatableAttribute id="caption">Main Menu</translatableAttribute>
 				<action on="Press">Engine.SwitchGuiPage("page_pregame.xml");</action>
 			</object>
Index: binaries/data/mods/public/gui/summary/summary.xml
===================================================================
--- binaries/data/mods/public/gui/summary/summary.xml
+++ binaries/data/mods/public/gui/summary/summary.xml
@@ -203,7 +203,7 @@
 			<action on="Press">confirmStartReplay();</action>
 		</object>
 
-		<object type="button" style="ModernButtonRed" size="100%-160 100%-48 100%-20 100%-20">
+		<object type="button" style="ModernButtonRed" size="100%-160 100%-48 100%-20 100%-20" hotkey="cancel">
 			<translatableAttribute id="caption">Continue</translatableAttribute>
 			<action on="Press">continueButton();</action>
 		</object>