diff --git a/src/character_selector.c b/src/character_selector.c
index 1c4bca0..6d55303 100644
--- a/src/character_selector.c
+++ b/src/character_selector.c
@@ -243,7 +243,9 @@ bool characterSelectorWindowInit()
         return false;
     }
 
-    gCharacterSelectorWindow = windowCreate(0, 0, CS_WINDOW_WIDTH, CS_WINDOW_HEIGHT, _colorTable[0], 0);
+    int characterSelectorWindowX = (screenGetWidth() - CS_WINDOW_WIDTH) / 2;
+    int characterSelectorWindowY = (screenGetHeight() - CS_WINDOW_HEIGHT) / 2;
+    gCharacterSelectorWindow = windowCreate(characterSelectorWindowX, characterSelectorWindowY, CS_WINDOW_WIDTH, CS_WINDOW_HEIGHT, _colorTable[0], 0);
     if (gCharacterSelectorWindow == -1) {
         goto err;
     }
diff --git a/src/credits.c b/src/credits.c
index ae95166..b12ab37 100644
--- a/src/credits.c
+++ b/src/credits.c
@@ -66,7 +66,9 @@ void creditsOpen(const char* filePath, int backgroundFid, bool useReversedStyle)
                 mouseShowCursor();
             }
 
-            int window = windowCreate(0, 0, CREDITS_WINDOW_WIDTH, CREDITS_WINDOW_HEIGHT, _colorTable[0], 20);
+            int creditsWindowX = (screenGetWidth() - CREDITS_WINDOW_WIDTH) / 2;
+            int creditsWindowY = (screenGetHeight() - CREDITS_WINDOW_HEIGHT) / 2;
+            int window = windowCreate(creditsWindowX, creditsWindowY, CREDITS_WINDOW_WIDTH, CREDITS_WINDOW_HEIGHT, _colorTable[0], 20);
             soundContinueAll();
             if (window != -1) {
                 unsigned char* windowBuffer = windowGetBuffer(window);
diff --git a/src/interface.c b/src/interface.c
index 7244f30..5ceeb56 100644
--- a/src/interface.c
+++ b/src/interface.c
@@ -32,6 +32,7 @@
 #define INDICATOR_BOX_WIDTH 130
 #define INDICATOR_BOX_HEIGHT 21
 
+#define INTERFACE_BAR_WIDTH 640
 #define INTERFACE_BAR_HEIGHT 100
 
 // The width of connectors in the indicator box.
@@ -350,10 +351,10 @@ int interfaceInit()
 
     gInterfaceBarInitialized = 1;
 
-    int xPos = (_scr_size.right - 640) / 2;
-    int yPos = _scr_size.bottom - 99;
+    int interfaceBarWindowX = (screenGetWidth() - INTERFACE_BAR_WIDTH) / 2;
+    int interfaceBarWindowY = screenGetHeight() - INTERFACE_BAR_HEIGHT - 1;
 
-    gInterfaceBarWindow = windowCreate(xPos, yPos, 640, 100, _colorTable[0], WINDOW_HIDDEN);
+    gInterfaceBarWindow = windowCreate(interfaceBarWindowX, interfaceBarWindowY, INTERFACE_BAR_WIDTH, INTERFACE_BAR_HEIGHT, _colorTable[0], WINDOW_HIDDEN);
     if (gInterfaceBarWindow == -1) {
         goto err;
     }
@@ -369,7 +370,7 @@ int interfaceInit()
         goto err;
     }
 
-    blitBufferToBuffer(backgroundFrmData, 640, 99, 640, gInterfaceWindowBuffer, 640);
+    blitBufferToBuffer(backgroundFrmData, INTERFACE_BAR_WIDTH, INTERFACE_BAR_HEIGHT - 1, INTERFACE_BAR_WIDTH, gInterfaceWindowBuffer, 640);
     artUnlock(backgroundFrmHandle);
 
     fid = buildFid(6, 47, 0, 0, 0);
diff --git a/src/tile.c b/src/tile.c
index f39d400..b07e749 100644
--- a/src/tile.c
+++ b/src/tile.c
@@ -502,21 +502,21 @@ int tileSetCenter(int tile, int flags)
         }
     }
 
-    int v9 = gHexGridWidth - 1 - tile % gHexGridWidth;
-    int v10 = tile / gHexGridWidth;
+    int tile_x = gHexGridWidth - 1 - tile % gHexGridWidth;
+    int tile_y = tile / gHexGridWidth;
 
     if (_borderInitialized) {
-        if (v9 <= _tile_border || v9 >= dword_66BBCC || v10 <= dword_66BBC8 || v10 >= dword_66BBD0) {
+        if (tile_x <= _tile_border || tile_x >= dword_66BBCC || tile_y <= dword_66BBC8 || tile_y >= dword_66BBD0) {
             return -1;
         }
     }
 
-    _tile_y = v10;
+    _tile_y = tile_y;
     _tile_offx = (gTileWindowWidth - 32) / 2;
-    _tile_x = v9;
+    _tile_x = tile_x;
     _tile_offy = (gTileWindowHeight - 16) / 2;
 
-    if (v9 & 1) {
+    if (tile_x & 1) {
         _tile_x -= 1;
         _tile_offx -= 32;
     }