diff --git a/src/net/torvald/terrarum/ModOptionsHost.kt b/src/net/torvald/terrarum/ModOptionsHost.kt
index 33e2988d3..ac02aefe2 100644
--- a/src/net/torvald/terrarum/ModOptionsHost.kt
+++ b/src/net/torvald/terrarum/ModOptionsHost.kt
@@ -7,7 +7,9 @@ import net.torvald.terrarum.modulebasegame.ui.UIRemoCon
 import net.torvald.terrarum.ui.UICanvas
 
 class ModOptionsHost(val remoCon: UIRemoCon) : UICanvas() {
-
+    init {
+        handler.allowESCtoClose = false
+    }
 
     private val moduleAreaHMargin = 48
     private val moduleAreaBorder = 8
diff --git a/src/net/torvald/terrarum/UIFakeGradOverlay.kt b/src/net/torvald/terrarum/UIFakeGradOverlay.kt
index 4757d77d9..7e286ebf6 100644
--- a/src/net/torvald/terrarum/UIFakeGradOverlay.kt
+++ b/src/net/torvald/terrarum/UIFakeGradOverlay.kt
@@ -15,7 +15,9 @@ import net.torvald.terrarum.ui.UICanvas
  * Created by minjaesong on 2021-09-09.
  */
 class UIFakeGradOverlay : UICanvas() {
-
+    init {
+        handler.allowESCtoClose = false
+    }
     override var width: Int
         get() = App.scr.width
         set(value) {}
@@ -67,7 +69,9 @@ class UIFakeGradOverlay : UICanvas() {
 }
 
 class UIFakeBlurOverlay(val blurRadius: Float, val nodarken: Boolean) : UICanvas() {
-
+    init {
+        handler.allowESCtoClose = false
+    }
     override var width: Int
         get() = App.scr.width
         set(value) {}
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/NullUI.kt b/src/net/torvald/terrarum/modulebasegame/ui/NullUI.kt
index e6eb67a22..947aa243a 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/NullUI.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/NullUI.kt
@@ -9,6 +9,10 @@ import net.torvald.terrarum.ui.UICanvas
  * Created by minjaesong on 2017-03-13.
  */
 object NullUI : UICanvas() {
+    init {
+        handler.allowESCtoClose = false
+    }
+
     override var width: Int = 0
     override var height: Int = 0
     override var openCloseTime = 0f
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIGraphicsControlPanel.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIGraphicsControlPanel.kt
index 1ded930fc..f4a541bd6 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIGraphicsControlPanel.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIGraphicsControlPanel.kt
@@ -23,6 +23,8 @@ class UIGraphicsControlPanel(remoCon: UIRemoCon?) : UICanvas() {
     override var width = 560
 
     init {
+        handler.allowESCtoClose = false
+
         ControlPanelCommon.register(this, width, "basegame.graphicscontrolpanel", arrayOf(
             arrayOf("", { Lang["CREDITS_VFX"] }, "h1"),
                 arrayOf("fx_dither", { Lang["MENU_OPTIONS_DITHER"] }, "toggle"),
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIIMEConfig.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIIMEConfig.kt
index f76926425..3d43b9169 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIIMEConfig.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIIMEConfig.kt
@@ -20,6 +20,10 @@ import net.torvald.terrarum.ui.*
  */
 class UIIMEConfig(remoCon: UIRemoCon?) : UICanvas() {
 
+    init {
+        handler.allowESCtoClose = false
+    }
+
     override var width = 480
     override var height = 600
 
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIImportAvatar.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIImportAvatar.kt
index 1869b3686..5afe81877 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIImportAvatar.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIImportAvatar.kt
@@ -25,6 +25,9 @@ import java.io.File
  * Created by minjaesong on 2023-08-24.
  */
 class UIImportAvatar(val remoCon: UIRemoCon) : Advanceable() {
+    init {
+        handler.allowESCtoClose = false
+    }
 
     override var width = 480 // SAVE_CELL_WIDTH
     override var height = 480
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIInventoryEscMenu.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIInventoryEscMenu.kt
index 01ea85486..1b22407bb 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIInventoryEscMenu.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIInventoryEscMenu.kt
@@ -330,7 +330,6 @@ class UIInventoryEscMenu(val full: UIInventoryFull) : UICanvas() {
 
     override fun doClosing(delta: Float) {
         super.doClosing(delta)
-        screen = 0
     }
 
     override fun endOpening(delta: Float) {
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIKeyboardControlPanel.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIKeyboardControlPanel.kt
index 7f505e255..e74d0780d 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIKeyboardControlPanel.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIKeyboardControlPanel.kt
@@ -16,6 +16,9 @@ import net.torvald.terrarum.ui.*
  */
 class UIKeyboardControlPanel(remoCon: UIRemoCon?) : UICanvas() {
 
+    init {
+        handler.allowESCtoClose = false
+    }
 
     override var width = 480
     override var height = 600
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UILoadList.kt b/src/net/torvald/terrarum/modulebasegame/ui/UILoadList.kt
index ae2a2693b..3ad36ab28 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UILoadList.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UILoadList.kt
@@ -20,6 +20,10 @@ import kotlin.math.roundToInt
  */
 class UILoadList(val full: UILoadSavegame) : UICanvas() {
 
+    init {
+        handler.allowESCtoClose = false
+    }
+
     override var width: Int = Toolkit.drawWidth
     override var height: Int = App.scr.height
 
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UILoadManage.kt b/src/net/torvald/terrarum/modulebasegame/ui/UILoadManage.kt
index 3a97f4287..3c0d62804 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UILoadManage.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UILoadManage.kt
@@ -34,6 +34,10 @@ import java.util.*
  */
 class UILoadManage(val full: UILoadSavegame) : UICanvas() {
 
+    init {
+        handler.allowESCtoClose = false
+    }
+
     override var width: Int = Toolkit.drawWidth
     override var height: Int = App.scr.height
 
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UILoadNewCharacter.kt b/src/net/torvald/terrarum/modulebasegame/ui/UILoadNewCharacter.kt
index 58cf54012..62a66891a 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UILoadNewCharacter.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UILoadNewCharacter.kt
@@ -11,6 +11,9 @@ import net.torvald.terrarum.ui.UICanvas
  * Created by minjaesong on 2023-07-05.
  */
 class UILoadNewCharacter(val full: UILoadSavegame) : UICanvas() {
+    init {
+        handler.allowESCtoClose = false
+    }
 
     override var width: Int = Toolkit.drawWidth
     override var height: Int = App.scr.height
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UILoadSavegame.kt b/src/net/torvald/terrarum/modulebasegame/ui/UILoadSavegame.kt
index 3d23d1f28..99a369b4d 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UILoadSavegame.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UILoadSavegame.kt
@@ -25,6 +25,8 @@ class UILoadSavegame(val remoCon: UIRemoCon) : Advanceable() {
 //    private val hash = RandomWordsName(3)
 
     init {
+        handler.allowESCtoClose = false
+
         CommonResourcePool.addToLoadingList("terrarum-defaultsavegamethumb") {
             TextureRegion(Texture(Gdx.files.internal("assets/graphics/gui/savegame_thumb_placeholder.png")))
         }
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UINewCharacter.kt b/src/net/torvald/terrarum/modulebasegame/ui/UINewCharacter.kt
index f4e1d80f4..840aad85a 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UINewCharacter.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UINewCharacter.kt
@@ -27,6 +27,10 @@ import java.io.File
  */
 class UINewCharacter(val remoCon: UIRemoCon) : UICanvas() {
 
+    init {
+        handler.allowESCtoClose = false
+    }
+
     override var width = 480
     override var height = 480
 
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UINewWorld.kt b/src/net/torvald/terrarum/modulebasegame/ui/UINewWorld.kt
index f2c3c5591..e622f97ad 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UINewWorld.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UINewWorld.kt
@@ -33,6 +33,9 @@ import kotlin.math.roundToInt
  * Created by minjaesong on 2021-10-25.
  */
 class UINewWorld(val remoCon: UIRemoCon) : UICanvas() {
+    init {
+        handler.allowESCtoClose = false
+    }
 
     private var newPlayerCreationThread = Thread {}
     private var existingPlayer: DiskSkimmer? = null
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIPerformanceControlPanel.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIPerformanceControlPanel.kt
index 22a9ce72d..bf0648711 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIPerformanceControlPanel.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIPerformanceControlPanel.kt
@@ -23,6 +23,8 @@ class UIPerformanceControlPanel(remoCon: UIRemoCon?) : UICanvas() {
     override var width = 560
 
     init {
+        handler.allowESCtoClose = false
+
         ControlPanelCommon.register(this, width, "basegame.performancecontrolpanel", arrayOf(
             arrayOf("", { Lang["MENU_OPTIONS_GAMEPLAY"] }, "h1"),
                 arrayOf("autosaveinterval", { Lang["MENU_OPTIONS_AUTOSAVE"] + " (${Lang["CONTEXT_TIME_MINUTE_PLURAL"]})" }, "spinnerimul,5,120,5,60000"),
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIRemoCon.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIRemoCon.kt
index 106ef794c..82bc0c9ae 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIRemoCon.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIRemoCon.kt
@@ -24,7 +24,9 @@ import net.torvald.terrarum.ui.UIItemTextButtonList.Companion.DEFAULT_LINE_HEIGH
  * Created by minjaesong on 2018-08-29.
  */
 open class UIRemoCon(val parent: TitleScreen, val treeRoot: QNDTreeNode<String>) : UICanvas() {
-
+    init {
+        handler.allowESCtoClose = false
+    }
     override var openCloseTime = 0f
 
     private var remoConTray: UIRemoConElement // this remocon is dynamically generated
@@ -196,6 +198,7 @@ open class UIRemoCon(val parent: TitleScreen, val treeRoot: QNDTreeNode<String>)
             ui.setPosition(0,0)
             parent.uiFakeBlurOverlay.setAsOpen()
             ui.setAsOpen()
+            ui.handler.allowESCtoClose = false
             openUI = ui
         }
     }
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt b/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt
index cbc532a94..cb0076720 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt
@@ -14,6 +14,8 @@ class UISoundControlPanel(remoCon: UIRemoCon?) : UICanvas() {
     override var width = 560
 
     init {
+        handler.allowESCtoClose = false
+
         ControlPanelCommon.register(this, width, "basegame.soundcontrolpanel", arrayOf(
             arrayOf("mastervolume", { Lang["MENU_OPTIONS_SOUND_VOLUME"] }, "sliderd,0,1"),
             arrayOf("", { "" }, "p"),
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UITitleLanguage.kt b/src/net/torvald/terrarum/modulebasegame/ui/UITitleLanguage.kt
index 21292f72b..d4c0ac920 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UITitleLanguage.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UITitleLanguage.kt
@@ -16,6 +16,10 @@ import kotlin.math.max
 
 class UITitleLanguage(remoCon: UIRemoCon?) : UICanvas() {
 
+    init {
+        handler.allowESCtoClose = false
+    }
+
     val menuLabels = arrayOf(
             "MENU_LABEL_RETURN"
     )
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UITitleModules.kt b/src/net/torvald/terrarum/modulebasegame/ui/UITitleModules.kt
index 5edb40d1c..bdc237909 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UITitleModules.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UITitleModules.kt
@@ -22,6 +22,9 @@ val MODULEINFO_CELL_HEIGHT = 24*3
  * Created by minjaesong on 2017-08-01.
  */
 class UITitleModules(val remoCon: UIRemoCon) : UICanvas() {
+    init {
+        handler.allowESCtoClose = false
+    }
 
     override var width: Int
         get() = Toolkit.drawWidth
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UITitleWallOfText.kt b/src/net/torvald/terrarum/modulebasegame/ui/UITitleWallOfText.kt
index 469b86413..500ea393b 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UITitleWallOfText.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UITitleWallOfText.kt
@@ -11,7 +11,9 @@ import net.torvald.terrarum.ui.*
 import java.util.TreeMap
 
 open class UITitleWallOfText(private val text: List<String>) : UICanvas() {
-
+    init {
+        handler.allowESCtoClose = false
+    }
 
     private val textAreaHMargin = 48
     override var width = 600
diff --git a/src/net/torvald/terrarum/ui/UIAutosaveNotifier.kt b/src/net/torvald/terrarum/ui/UIAutosaveNotifier.kt
index 69c5e7158..5ad8af997 100644
--- a/src/net/torvald/terrarum/ui/UIAutosaveNotifier.kt
+++ b/src/net/torvald/terrarum/ui/UIAutosaveNotifier.kt
@@ -14,6 +14,10 @@ import kotlin.math.roundToInt
  */
 class UIAutosaveNotifier : UICanvas() {
 
+    init {
+        handler.allowESCtoClose = false
+    }
+
     companion object {
         const val WIDTH = 180
         const val HEIGHT = 24
diff --git a/src/net/torvald/terrarum/ui/UINSMenu.kt b/src/net/torvald/terrarum/ui/UINSMenu.kt
index fc8cc785a..554f6c36f 100644
--- a/src/net/torvald/terrarum/ui/UINSMenu.kt
+++ b/src/net/torvald/terrarum/ui/UINSMenu.kt
@@ -67,6 +67,7 @@ class UINSMenu(
     var invocationArgument: Array<Any> = arrayOf(this)
 
     init {
+        handler.allowESCtoClose = false
         addSubMenu(tree)
     }
 
diff --git a/src/net/torvald/unsafe/UnsafePtr.kt b/src/net/torvald/unsafe/UnsafePtr.kt
index 44858f755..a3e127287 100644
--- a/src/net/torvald/unsafe/UnsafePtr.kt
+++ b/src/net/torvald/unsafe/UnsafePtr.kt
@@ -113,8 +113,8 @@ internal class UnsafePtr(pointer: Long, allocSize: Long) {
         // appear (e.g. getting garbage values when it fucking shouldn't)
 
         // using ifs instead of assertions: inactive assert statements still slows down the app
-//        if (destroyed) { throw DanglingPointerException("The pointer is already destroyed ($this)") }
-//        if (index !in 0 until size) { throw AddressOverflowException("Index: $index; alloc size: $size") }
+        if (destroyed) { throw DanglingPointerException("The pointer is already destroyed ($this)") }
+        if (index !in 0 until size) { throw AddressOverflowException("Index: $index; alloc size: $size") }
     }
 
     operator fun get(index: Long): Byte {