diff --git a/android/assets/i18n/messages/messages_en.properties b/android/assets/i18n/messages/messages_en.properties
index efa09b4..92103a6 100644
--- a/android/assets/i18n/messages/messages_en.properties
+++ b/android/assets/i18n/messages/messages_en.properties
@@ -40,3 +40,50 @@
 [oneway-desc]=Let elekrons going accross this transmuter only in one direction, the others are blocked and go to the opposite.
 [distributer-name]=Distributer
 [distributer-desc]=Change direction every elektron respectively to exit 1,2 and 3, this allow to distribute one on three elektron on each exit.
+[buttonConnect-levelscreen]=Databases
+[buttonPlay-levelscreen]=Play
+[buttonStat-levelscreen]=Statistics
+[buttonSave-levelscreen]=Save
+[buttonApply-levelscreen]=Apply
+[buttonPlaythis-levelscreen]=Play the world
+[Statdatalabel-levelscreen]=Statistics database:
+[Userdatalabel-levelscreen]=User database:
+[Gamedatalabel-levelscreen]=Game database:
+[Worlddatalabel-levelscreen]=Availables worlds:
+[reward-levelscreen]=Rewards
+[goal-levelscreen]=Goals
+[ressource-levelscreen]=Ressources
+[handicap-levelscreen]=Handicaps
+[winOptions-gamescreen]=Game options
+[winSave-gamescreen]=Saved grids
+[dialog-window]=Informations
+[dialog-levelscreen-savedatabase]=You need to relaunch the game in order to used the new configuration.
+[dialog-levelscreen-errorloading]=A problem has occured when the database has been changed.
+[dialog-levelscreen-errornoworld]=No world is selected !
+[dialog-levelscreen-errorlevels]=Impossible to use the game with this database configuration, you can use the "Reinit" button to obtain the initial configuration of the databases.
+[dialog-gamescreen-preference]=You need to relaunch the game in order to apply the new preferences.
+[WinOptions-gamescreen-Video]=Video
+[WinOptions-gamescreen-Audio]=Audio
+[WinOptions-gamescreen-Game]=Game
+[WinOptions-gamescreen-sync]=Vertical synchronization
+[WinOptions-gamescreen-full]=Full screen
+[WinOptions-gamescreen-animation]=Animations activation
+[WinOptions-gamescreen-resolution]=Screen resolution:
+[WinOptions-gamescreen-fill]=Screen filling:
+[WinOptions-gamescreen-quality]=Texture quality:
+[WinOptions-gamescreen-sound]=Sound activation
+[WinOptions-gamescreen-effect]=Effects volume
+[WinOptions-gamescreen-music]=Music volume
+[WinOptions-gamescreen-tuto]=Tutorial activation
+[WinOptions-gamescreen-debug]=Debug mode
+[WinOptions-gamescreen-refresh]=Show refresh rate
+[WinOptions-gamescreen-grid]=Show grid
+[WinOptions-gamescreen-language]=Choose of your language
+[WinOptions-gamescreen-save]=Save
+[WinOptions-gamescreen-cancel]=Cancel
+[resolutions-gamescreen-fullscreen]=Fullscreen
+[adaptation-gamescreen-fill]=Fill screen
+[adaptation-gamescreen-fit]=Keep aspect ratio
+[quality-gamescreen-low]=Low
+[quality-gamescreen-medium]=Medium
+[quality-gamescreen-high]=High
\ No newline at end of file
diff --git a/android/assets/i18n/messages/messages_fr.properties b/android/assets/i18n/messages/messages_fr.properties
index d8e2efd..c04cc4b 100644
--- a/android/assets/i18n/messages/messages_fr.properties
+++ b/android/assets/i18n/messages/messages_fr.properties
@@ -40,6 +40,50 @@
 [oneway-desc]=Laisse passer les électrons uniquement dans le sens indiqué par le transmuteur, les autres seront repoussés dans l'autre sens.
 [distributer-name]=Distributeur
 [distributer-desc]=Oriente tour à tour les électrons vers les sorties 1,2,3 permettant de distribuer 1/3 des électrons vers chaque sortie.
-
-
-
+[buttonConnect-levelscreen]=Bases
+[buttonPlay-levelscreen]=Jouer
+[buttonStat-levelscreen]=Statistiques
+[buttonSave-levelscreen]=Sauvegarder
+[buttonApply-levelscreen]=Appliquer
+[buttonPlaythis-levelscreen]=Jouer ce monde
+[Statdatalabel-levelscreen]=Stockage des statistiques:
+[Userdatalabel-levelscreen]=Stockage des données du joueur:
+[Gamedatalabel-levelscreen]=Stockage des données du jeu:
+[Worlddatalabel-levelscreen]=Mondes disponibles:
+[reward-levelscreen]=Récompenses
+[goal-levelscreen]=Objectifs
+[ressource-levelscreen]=Ressources
+[handicap-levelscreen]=Handicapes
+[winOptions-gamescreen]=Options du jeu
+[winSave-gamescreen]=Grilles sauvegardées
+[dialog-window]=Informations
+[dialog-levelscreen-savedatabase]=Vous devez relancer le jeu pour bénéfier des changements.
+[dialog-levelscreen-errorloading]=Un problème est survenu lors du changement de base de donnée.
+[dialog-levelscreen-errornoworld]=Aucun monde n'a été sélectionné
+[dialog-levelscreen-errorlevels]=Impossible de jouer sans bases de données correctement configurée, cliquer sur "Réinitialisation" si vous ne savez pas revenir à une situation jouable.
+[dialog-gamescreen-preference]=Veuillez relancer le jeu pour que les préférences soient appliquées.
+[WinOptions-gamescreen-Video]=Video
+[WinOptions-gamescreen-Audio]=Audio
+[WinOptions-gamescreen-Game]=Jeu
+[WinOptions-gamescreen-sync]=Synchronisation verticale
+[WinOptions-gamescreen-full]=Plein écran
+[WinOptions-gamescreen-animation]=Activer les animations
+[WinOptions-gamescreen-resolution]=Résolution de l'écran:
+[WinOptions-gamescreen-fill]=Remplissage de l'écran:
+[WinOptions-gamescreen-quality]=Qualité des textures:
+[WinOptions-gamescreen-sound]=Activation du son
+[WinOptions-gamescreen-effect]=Volume des effets
+[WinOptions-gamescreen-music]=Volume de la musique
+[WinOptions-gamescreen-tuto]=Activation du tutoriel
+[WinOptions-gamescreen-debug]=Mode déboguage
+[WinOptions-gamescreen-refresh]=Afficher le rafraîchissement
+[WinOptions-gamescreen-grid]=Afficher la grille
+[WinOptions-gamescreen-language]=Choix de la langue
+[WinOptions-gamescreen-save]=Enregistrer
+[WinOptions-gamescreen-cancel]=Annuler
+[resolutions-gamescreen-fullscreen]=Plein écran
+[adaptation-gamescreen-fill]=Remplir l'écran
+[adaptation-gamescreen-fit]=Conserver le ratio
+[quality-gamescreen-low]=Bas
+[quality-gamescreen-medium]=Moyen
+[quality-gamescreen-high]=Elevé
diff --git a/android/assets/textures/level.atlas b/android/assets/textures/level.atlas
index 88bbae5..121aecf 100644
--- a/android/assets/textures/level.atlas
+++ b/android/assets/textures/level.atlas
@@ -318,35 +318,35 @@ fullscreen
   orig: 64, 64
   offset: 0, 0
   index: -1
-infos
+grid
   rotate: false
   xy: 616, 293
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge0
+infos
   rotate: false
   xy: 709, 29
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge1
+jauge0
   rotate: false
   xy: 775, 29
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge2
+jauge1
   rotate: false
   xy: 841, 29
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge3
+jauge2
   rotate: false
   xy: 907, 42
   size: 64, 64
@@ -492,146 +492,160 @@ size: 1024,1024
 format: RGBA8888
 filter: Linear,Linear
 repeat: none
-levels
+jauge3
   rotate: false
   xy: 1, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-middle
+levels
   rotate: false
   xy: 911, 925
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-move
+middle
   rotate: false
   xy: 67, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-nosound
+move
   rotate: false
   xy: 911, 859
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-nothing
+nogrid
   rotate: false
   xy: 133, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-nrj
+nosound
   rotate: false
   xy: 911, 793
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay
+nothing
   rotate: false
   xy: 199, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay-end
+nrj
   rotate: false
   xy: 911, 727
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay-middle
+overlay
   rotate: false
   xy: 265, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay-start
+overlay-end
   rotate: false
   xy: 911, 661
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-pause
+overlay-middle
   rotate: false
   xy: 331, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-points
+overlay-start
   rotate: false
   xy: 911, 595
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-rayon
+pause
   rotate: false
   xy: 397, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-raz
+points
   rotate: false
   xy: 911, 529
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-run
+rayon
   rotate: false
   xy: 463, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-save
+raz
   rotate: false
   xy: 911, 463
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-screen
+run
   rotate: false
   xy: 529, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-settings
+save
   rotate: false
   xy: 911, 397
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-sound
+screen
   rotate: false
   xy: 595, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-speed
+settings
   rotate: false
   xy: 911, 331
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
+sound
+  rotate: false
+  xy: 661, 15
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
+speed
+  rotate: false
+  xy: 911, 265
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
 sprite-copper
   rotate: false
   xy: 1, 861
@@ -977,61 +991,47 @@ sprite-surtile_69#1
   index: -1
 start
   rotate: false
-  xy: 661, 15
+  xy: 727, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 stat
   rotate: false
-  xy: 911, 265
+  xy: 911, 199
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 stop
   rotate: false
-  xy: 727, 15
+  xy: 793, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 tech
   rotate: false
-  xy: 911, 199
+  xy: 911, 133
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 temp
   rotate: false
-  xy: 793, 15
+  xy: 859, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 tree
-  rotate: false
-  xy: 911, 133
-  size: 64, 64
-  orig: 64, 64
-  offset: 0, 0
-  index: -1
-tuto
-  rotate: false
-  xy: 859, 15
-  size: 64, 64
-  orig: 64, 64
-  offset: 0, 0
-  index: -1
-usa
   rotate: false
   xy: 925, 67
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-windows
+tuto
   rotate: false
   xy: 925, 1
   size: 64, 64
@@ -1282,17 +1282,31 @@ sprite-transmuter
   orig: 128, 128
   offset: 0, 0
   index: 130
-zoomm
+usa
   rotate: false
   xy: 1, 1
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-zoomp
+windows
   rotate: false
   xy: 781, 781
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
+zoomm
+  rotate: false
+  xy: 911, 911
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
+zoomp
+  rotate: false
+  xy: 261, 131
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
diff --git a/android/assets/textures/level.json b/android/assets/textures/level.json
index b0544bf..5d9aadd 100644
--- a/android/assets/textures/level.json
+++ b/android/assets/textures/level.json
@@ -141,7 +141,8 @@
         screen: { checked: screen, up:windows   }  
         sound: { checked:sound , up :nosound }
  		Setflag: { checked:french  , up: usa }
-        tuto: { checked:tuto , up:nothing }   
+        tuto: { checked:tuto , up:nothing }  
+        grid: { checked: grid, up:nogrid } 
         settings: { up: settings,down:settings_down }   
         stat: { up: stat,down:stat_down }
         separator: { up: separator }       
diff --git a/android/assets/textures/level.pack b/android/assets/textures/level.pack
index 88bbae5..121aecf 100644
--- a/android/assets/textures/level.pack
+++ b/android/assets/textures/level.pack
@@ -318,35 +318,35 @@ fullscreen
   orig: 64, 64
   offset: 0, 0
   index: -1
-infos
+grid
   rotate: false
   xy: 616, 293
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge0
+infos
   rotate: false
   xy: 709, 29
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge1
+jauge0
   rotate: false
   xy: 775, 29
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge2
+jauge1
   rotate: false
   xy: 841, 29
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-jauge3
+jauge2
   rotate: false
   xy: 907, 42
   size: 64, 64
@@ -492,146 +492,160 @@ size: 1024,1024
 format: RGBA8888
 filter: Linear,Linear
 repeat: none
-levels
+jauge3
   rotate: false
   xy: 1, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-middle
+levels
   rotate: false
   xy: 911, 925
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-move
+middle
   rotate: false
   xy: 67, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-nosound
+move
   rotate: false
   xy: 911, 859
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-nothing
+nogrid
   rotate: false
   xy: 133, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-nrj
+nosound
   rotate: false
   xy: 911, 793
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay
+nothing
   rotate: false
   xy: 199, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay-end
+nrj
   rotate: false
   xy: 911, 727
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay-middle
+overlay
   rotate: false
   xy: 265, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-overlay-start
+overlay-end
   rotate: false
   xy: 911, 661
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-pause
+overlay-middle
   rotate: false
   xy: 331, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-points
+overlay-start
   rotate: false
   xy: 911, 595
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-rayon
+pause
   rotate: false
   xy: 397, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-raz
+points
   rotate: false
   xy: 911, 529
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-run
+rayon
   rotate: false
   xy: 463, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-save
+raz
   rotate: false
   xy: 911, 463
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-screen
+run
   rotate: false
   xy: 529, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-settings
+save
   rotate: false
   xy: 911, 397
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-sound
+screen
   rotate: false
   xy: 595, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-speed
+settings
   rotate: false
   xy: 911, 331
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
+sound
+  rotate: false
+  xy: 661, 15
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
+speed
+  rotate: false
+  xy: 911, 265
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
 sprite-copper
   rotate: false
   xy: 1, 861
@@ -977,61 +991,47 @@ sprite-surtile_69#1
   index: -1
 start
   rotate: false
-  xy: 661, 15
+  xy: 727, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 stat
   rotate: false
-  xy: 911, 265
+  xy: 911, 199
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 stop
   rotate: false
-  xy: 727, 15
+  xy: 793, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 tech
   rotate: false
-  xy: 911, 199
+  xy: 911, 133
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 temp
   rotate: false
-  xy: 793, 15
+  xy: 859, 15
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
 tree
-  rotate: false
-  xy: 911, 133
-  size: 64, 64
-  orig: 64, 64
-  offset: 0, 0
-  index: -1
-tuto
-  rotate: false
-  xy: 859, 15
-  size: 64, 64
-  orig: 64, 64
-  offset: 0, 0
-  index: -1
-usa
   rotate: false
   xy: 925, 67
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-windows
+tuto
   rotate: false
   xy: 925, 1
   size: 64, 64
@@ -1282,17 +1282,31 @@ sprite-transmuter
   orig: 128, 128
   offset: 0, 0
   index: 130
-zoomm
+usa
   rotate: false
   xy: 1, 1
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
-zoomp
+windows
   rotate: false
   xy: 781, 781
   size: 64, 64
   orig: 64, 64
   offset: 0, 0
   index: -1
+zoomm
+  rotate: false
+  xy: 911, 911
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
+zoomp
+  rotate: false
+  xy: 261, 131
+  size: 64, 64
+  orig: 64, 64
+  offset: 0, 0
+  index: -1
diff --git a/android/assets/textures/level2.png b/android/assets/textures/level2.png
index 10b645f..a9a084a 100644
Binary files a/android/assets/textures/level2.png and b/android/assets/textures/level2.png differ
diff --git a/android/assets/textures/level3.png b/android/assets/textures/level3.png
index bddfc71..d7becd0 100644
Binary files a/android/assets/textures/level3.png and b/android/assets/textures/level3.png differ
diff --git a/android/assets/textures/level4.png b/android/assets/textures/level4.png
index 1f9caf8..65ea236 100644
Binary files a/android/assets/textures/level4.png and b/android/assets/textures/level4.png differ