diff --git a/src/blupi.cxx b/src/blupi.cxx
index 461fbd2..406aacb 100644
--- a/src/blupi.cxx
+++ b/src/blupi.cxx
@@ -192,8 +192,8 @@ UpdateFrame (void)
 
   rcRect.left   = 0;
   rcRect.top    = 0;
-  rcRect.right  = LXIMAGE;
-  rcRect.bottom = LYIMAGE;
+  rcRect.right  = LXLOGIC;
+  rcRect.bottom = LYLOGIC;
   g_pPixmap->DrawImage (-1, CHBACK, rcRect); // draw the background
 
   if (phase == EV_PHASE_INTRO1)
@@ -724,8 +724,8 @@ DoInit (int argc, char * argv[], bool & exit)
   }
 
   OutputDebug ("Image: init\n");
-  totalDim.x = LXIMAGE;
-  totalDim.y = LYIMAGE;
+  totalDim.x = LXLOGIC;
+  totalDim.y = LYLOGIC;
   iconDim.x  = 0;
   iconDim.y  = 0;
 #if _INTRO
@@ -736,8 +736,8 @@ DoInit (int argc, char * argv[], bool & exit)
     return EXIT_FAILURE;
 
   OutputDebug ("Image: init\n");
-  totalDim.x = LXIMAGE;
-  totalDim.y = LYIMAGE;
+  totalDim.x = LXLOGIC;
+  totalDim.y = LYLOGIC;
   iconDim.x  = 0;
   iconDim.y  = 0;
   if (!g_pPixmap->Cache (CHGROUND, "image/init.png", totalDim, iconDim))
@@ -745,8 +745,8 @@ DoInit (int argc, char * argv[], bool & exit)
 
   rcRect.left   = 0;
   rcRect.top    = 0;
-  rcRect.right  = LXIMAGE;
-  rcRect.bottom = LYIMAGE;
+  rcRect.right  = LXLOGIC;
+  rcRect.bottom = LYLOGIC;
   g_pPixmap->DrawImage (-1, CHBACK, rcRect); // dessine le fond
   g_pPixmap->Display ();
 
diff --git a/src/blupi.h b/src/blupi.h
index 3801da8..757ea15 100644
--- a/src/blupi.h
+++ b/src/blupi.h
@@ -26,12 +26,15 @@
 
 #include "config.h"
 
+class CEvent;
+
 extern SDL_Window *   g_window;
 extern SDL_Renderer * g_renderer;
 extern bool           g_bFullScreen;
 extern bool           g_restoreBugs;
 extern bool           g_enableRecorder;
 extern std::string    g_playRecord;
+extern CEvent *       g_pEvent;
 
 struct Point {
   Sint32 x;
diff --git a/src/def.h b/src/def.h
index 0b8602a..315090d 100644
--- a/src/def.h
+++ b/src/def.h
@@ -25,13 +25,16 @@
 // clang-format off
 #define _INTRO          true    // true for init screen
 
-#define SCRFACTOR       4 / 3
-#define LXIMAGE         (480 * SCRFACTOR + (480 * SCRFACTOR) % 2) // window size
-#define LYIMAGE         480
+#define SCRFACTOR       16 / 9
+#define LXLOGIC         640
+#define LYLOGIC         480
+#define LXIMAGE         (LYLOGIC * SCRFACTOR + (LYLOGIC * SCRFACTOR) % 2) // window size
+#define LYIMAGE         LYLOGIC
+#define LXOFFSET        ((LXIMAGE - LXLOGIC) / 2)
 
 #define POSDRAWX        144     // draw surface
 #define POSDRAWY        15
-#define DIMDRAWX        (LXIMAGE - (640 - 480))
+#define DIMDRAWX        (LXIMAGE - (LXLOGIC - LYLOGIC))
 #define DIMDRAWY        450
 
 #define POSMAPX         8       // map surface
diff --git a/src/event.cxx b/src/event.cxx
index 3ccc8fe..581d1fe 100644
--- a/src/event.cxx
+++ b/src/event.cxx
@@ -1876,7 +1876,7 @@ CEvent::SetMenu (Sint32 button, Sint32 menu)
 // Crée tous les boutons nécessaires à la phase en cours.
 
 bool
-CEvent::CreateButtons ()
+CEvent::CreateButtons (Sint32 phase)
 {
   Sint32 i = 0, message;
   Point  pos;
@@ -1890,6 +1890,9 @@ CEvent::CreateButtons ()
     pos.y   = table[m_index].buttons[i].y;
     message = table[m_index].buttons[i].message;
 
+    if (phase != EV_PHASE_PLAY && phase != EV_PHASE_BUILD)
+      pos.x += LXOFFSET;
+
     if (m_bPrivate)
     {
       if (message == EV_PHASE_SKILL1)
@@ -2004,7 +2007,7 @@ CEvent::DrawButtons ()
 
     if (!this->m_updateVersion.empty () && this->m_updateBlinking++ % 80 < 40)
     {
-      pos.x = 70;
+      pos.x = 70 + LXOFFSET;
       pos.y = 465;
       snprintf (
         res, sizeof (res),
@@ -2218,7 +2221,7 @@ CEvent::DrawButtons ()
     else
       snprintf (res, sizeof (res), "%s", gettext ("Save this game"));
 
-    pos.x = 420;
+    pos.x = 420 + LXOFFSET;
     pos.y = 8;
     DrawText (m_pPixmap, pos, res);
 
@@ -2229,11 +2232,11 @@ CEvent::DrawButtons ()
 
       snprintf (text, sizeof (text), "%d", i + 1);
       lg    = GetTextWidth (text);
-      pos.x = (420 + 460) / 2 - lg / 2;
+      pos.x = (420 + 460) / 2 - lg / 2 + LXOFFSET;
       pos.y = 30 + 12 + 42 * i;
       DrawText (m_pPixmap, pos, text, FONTSLIM);
 
-      pos.x = 420 + 50;
+      pos.x = 420 + 50 + LXOFFSET;
 
       if (world >= 0)
       {
@@ -2264,14 +2267,14 @@ CEvent::DrawButtons ()
 
     DrawTextCenter (gettext ("Ending conditions"), (10 + 134) / 2, 20);
 
-    pos.x = 170 + 42 * 2 + 4;
+    pos.x = 170 + 42 * 2 + 4 + LXOFFSET;
     pos.y = 30 + 12 + 42 * 4;
     snprintf (
       text, sizeof (text), gettext ("Lost if less than %d Blupi"),
       pTerm->nbMinBlupi);
     DrawText (m_pPixmap, pos, text);
 
-    pos.x = 170 + 42 * 2 + 4;
+    pos.x = 170 + 42 * 2 + 4 + LXOFFSET;
     pos.y = 30 + 12 + 42 * 5;
     snprintf (
       text, sizeof (text), gettext ("Impossible to win if less than %d Blupi"),
@@ -2303,7 +2306,7 @@ CEvent::DrawButtons ()
       snprintf (res, sizeof (res), "%s", gettext ("Construction number"));
 
     lg    = GetTextWidth (res);
-    pos.x = (140 + 270) / 2 - lg / 2;
+    pos.x = (140 + 270) / 2 - lg / 2 + LXOFFSET;
     pos.y = 70;
     if (m_bSchool)
       pos.x -= 40;
@@ -2319,7 +2322,7 @@ CEvent::DrawButtons ()
   {
     char * text = gettext ("Game paused");
     lg          = GetTextWidth (text);
-    pos.x       = (140 + 270) / 2 - lg / 2;
+    pos.x       = (140 + 270) / 2 - lg / 2 + LXOFFSET;
     pos.y       = 70;
     if (m_bSchool)
       pos.x -= 40;
@@ -2335,7 +2338,7 @@ CEvent::DrawButtons ()
   {
     char * text = gettext ("Help number");
     lg          = GetTextWidth (text);
-    pos.x       = (140 + 270) / 2 - lg / 2;
+    pos.x       = (140 + 270) / 2 - lg / 2 + LXOFFSET;
     pos.y       = 70;
     if (m_bSchool)
       pos.x -= 40;
@@ -2359,7 +2362,7 @@ CEvent::DrawButtons ()
       world = m_private;
 
     lg    = GetBignumWidth (world + 1);
-    pos.x = (140 + 270) / 2 - lg / 2;
+    pos.x = (140 + 270) / 2 - lg / 2 + LXOFFSET;
     pos.y = 100;
     if (m_bSchool)
       pos.x -= 40;
@@ -2387,6 +2390,7 @@ CEvent::DrawButtons ()
           pos.x = 150 + 50;
           pos.y = 230 + 13;
         }
+        pos.x += LXOFFSET;
         DrawText (m_pPixmap, pos, gettext ("Easy"), FONTSLIM);
       }
 
@@ -2402,6 +2406,7 @@ CEvent::DrawButtons ()
           pos.x = 150 + 50;
           pos.y = 230 + 42 + 13;
         }
+        pos.x += LXOFFSET;
         DrawText (m_pPixmap, pos, gettext ("Difficult"), FONTSLIM);
       }
     }
@@ -2426,6 +2431,7 @@ CEvent::DrawButtons ()
       pente = 0;
     else
       pente = 19;
+    pos.x += LXOFFSET;
     DrawTextRect (m_pPixmap, pos, m_libelle, pente, FONTSLIM);
   }
 
@@ -2440,7 +2446,7 @@ CEvent::DrawButtons ()
       gettext ("No, not that way !"),
     };
 
-    pos.x = 60;
+    pos.x = 60 + LXOFFSET;
     pos.y = 443;
     DrawText (m_pPixmap, pos, list[GetWorld () % 5]);
   }
@@ -2454,7 +2460,7 @@ CEvent::DrawButtons ()
       gettext ("Mission over..."),
     };
 
-    pos.x = 60;
+    pos.x = 60 + LXOFFSET;
     pos.y = 443;
     DrawText (m_pPixmap, pos, list[GetWorld () % 5]);
   }
@@ -2471,7 +2477,7 @@ CEvent::DrawButtons ()
     if (m_bPrivate)
       text = gettext ("Last construction resolved !");
 
-    pos.x = 60;
+    pos.x = 60 + LXOFFSET;
     pos.y = 443;
     DrawText (m_pPixmap, pos, text);
   }
@@ -2487,19 +2493,19 @@ CEvent::DrawButtons ()
 
     snprintf (res, sizeof (res), "x%d", m_speed);
     lg    = GetTextWidth (res);
-    pos.x = (54 + 40) - lg / 2;
+    pos.x = (54 + 40) - lg / 2 + LXOFFSET;
     pos.y = 330 - 20;
     DrawText (m_pPixmap, pos, res);
 
     snprintf (res, sizeof (res), "%d", m_pSound->GetAudioVolume ());
     lg    = GetTextWidth (res);
-    pos.x = (284 + 40) - lg / 2;
+    pos.x = (284 + 40) - lg / 2 + LXOFFSET;
     pos.y = 330 - 20;
     DrawText (m_pPixmap, pos, res);
 
     snprintf (res, sizeof (res), "%d", m_pSound->GetMidiVolume ());
     lg    = GetTextWidth (res);
-    pos.x = (399 + 40) - lg / 2;
+    pos.x = (399 + 40) - lg / 2 + LXOFFSET;
     pos.y = 330 - 20;
     DrawText (m_pPixmap, pos, res);
 
@@ -2507,7 +2513,7 @@ CEvent::DrawButtons ()
     if (m_pMovie->GetEnable () && m_bMovie)
       text = gettext ("Yes");
     lg    = GetTextWidth (text);
-    pos.x = (514 + 40) - lg / 2;
+    pos.x = (514 + 40) - lg / 2 + LXOFFSET;
     pos.y = 330 - 20;
     DrawText (m_pPixmap, pos, text);
 
@@ -2516,7 +2522,7 @@ CEvent::DrawButtons ()
     else
       snprintf (res, sizeof (res), "%d", m_scrollSpeed);
     lg    = GetTextWidth (res);
-    pos.x = (169 + 40) - lg / 2;
+    pos.x = (169 + 40) - lg / 2 + LXOFFSET;
     pos.y = 330 - 20;
     DrawText (m_pPixmap, pos, res);
   }
@@ -2542,14 +2548,14 @@ CEvent::DrawButtons ()
       lang = "Italiano";
 
     lg    = GetTextWidth (lang.c_str ());
-    pos.x = (54 + 40) - lg / 2;
+    pos.x = (54 + 40) - lg / 2 + LXOFFSET;
     pos.y = 330 - 20;
     DrawText (m_pPixmap, pos, lang.c_str ());
 
     const char * text =
       m_bFullScreen ? gettext ("Fullscreen") : gettext ("Windowed");
     lg    = GetTextWidth (text);
-    pos.x = (169 + 40) - lg / 2;
+    pos.x = (169 + 40) - lg / 2 + LXOFFSET;
     pos.y = 330 - 20;
     DrawText (m_pPixmap, pos, text);
 
@@ -2557,7 +2563,7 @@ CEvent::DrawButtons ()
     {
       snprintf (res, sizeof (res), "%dx", m_WindowScale);
       lg    = GetTextWidth (res);
-      pos.x = (284 + 40) - lg / 2;
+      pos.x = (284 + 40) - lg / 2 + LXOFFSET;
       pos.y = 330 - 20;
       DrawText (m_pPixmap, pos, res);
     }
@@ -2599,7 +2605,7 @@ CEvent::DrawButtons ()
 
     for (size_t i = 0; i < countof (libs); ++i)
     {
-      pos.x = 30;
+      pos.x = 30 + LXOFFSET;
       pos.y = 120 + i * 20;
       DrawText (m_pPixmap, pos, libs[i].c_str ());
     }
@@ -3171,7 +3177,7 @@ CEvent::ChangePhase (Uint32 phase)
 
   m_jauges[0].SetHide (true); // cache les jauges
   m_jauges[1].SetHide (true);
-  CreateButtons (); // crée les boutons selon la phase
+  CreateButtons (phase); // crée les boutons selon la phase
   m_bMenu = false;
   m_pDecor->HideTooltips (false);
   m_menu.Delete ();
diff --git a/src/event.h b/src/event.h
index dd4f624..6afbb28 100644
--- a/src/event.h
+++ b/src/event.h
@@ -24,7 +24,6 @@
 #include <unordered_map>
 #include <vector>
 
-#include "blupi.h"
 #include "button.h"
 #include "menu.h"
 #include "progress.h"
@@ -148,7 +147,7 @@ public:
 
 protected:
   void DrawTextCenter (const char * text, Sint32 x, Sint32 y, Sint32 font = 0);
-  bool CreateButtons ();
+  bool CreateButtons (Sint32 phase);
   bool EventButtons (const SDL_Event & event, Point pos);
   bool MouseOnButton (Point pos);
   Sint32 SearchPhase (Uint32 phase);
diff --git a/src/pixmap.cxx b/src/pixmap.cxx
index 23c6c1c..ae9f029 100644
--- a/src/pixmap.cxx
+++ b/src/pixmap.cxx
@@ -497,8 +497,16 @@ CPixmap::DrawImage (Sint32 chDst, size_t channel, Rect rect)
   if (m_SDLTextureInfo.find (channel) == m_SDLTextureInfo.end ())
     return false;
 
-  dst.x = rect.left;
-  dst.y = rect.top;
+  if (channel == CHBACK)
+  {
+    dst.x = (LXIMAGE - LXLOGIC) / 2;
+    dst.y = (LYIMAGE - LYLOGIC) / 2;
+  }
+  else
+  {
+    dst.x = rect.left;
+    dst.y = rect.top;
+  }
 
   res = BltFast (chDst, channel, dst, rect);
 
diff --git a/src/progress.h b/src/progress.h
index 478fc2e..99c725e 100644
--- a/src/progress.h
+++ b/src/progress.h
@@ -20,6 +20,8 @@
 
 #pragma once
 
+#include "blupi.h"
+
 class CPixmap;
 class CDecor;
 class CSound;
diff --git a/src/text.cxx b/src/text.cxx
index 1c1f7db..242b8a6 100644
--- a/src/text.cxx
+++ b/src/text.cxx
@@ -21,7 +21,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "blupi.h"
 #include "def.h"
+#include "event.h"
 #include "pixmap.h"
 #include "text.h"
 
@@ -122,6 +124,8 @@ DrawText (CPixmap * pPixmap, Point pos, const char * pText, Sint32 font)
 {
   Sint32 rank;
 
+  auto phase = g_pEvent->GetPhase ();
+
   while (*pText != '\0')
   {
     rank = GetOffset (pText);