diff --git a/Plague.g1a b/Plague.g1a
index 4b30fe9..c386ff4 100644
Binary files a/Plague.g1a and b/Plague.g1a differ
diff --git a/assets-fx/bground.png b/assets-fx/bground.png
index 83b496d..37e9f89 100644
Binary files a/assets-fx/bground.png and b/assets-fx/bground.png differ
diff --git a/src/core.c b/src/core.c
index 8c0a73e..4beb809 100644
--- a/src/core.c
+++ b/src/core.c
@@ -92,7 +92,7 @@ int get_inputs(const int background, int *mutation_menu)
     if (key == KEY_OPTN && (background == 1 || background == 2)) return (background % 2) + 1;
     if (key == KEY_VARS)
     {
-        *mutation_menu = 1;
+        *mutation_menu = 4;
         return 3;
     }
     if (key == KEY_SQUARE) return 6;
diff --git a/src/data.c b/src/data.c
index 4854748..23932a4 100644
--- a/src/data.c
+++ b/src/data.c
@@ -4,53 +4,53 @@
 // (contation, severity, lethality, DNA cost, change to cure requirement)
 const struct mutation symptoms_data[14] =
 {
-    {10, 10,  0,  2,  0, "NAUSEE"},
-    {15, 10,  0, 10,  0, "VOMISSEMENT"},
-    {10,  5,  0,  3,  0, "TOUX"},
-    {15, 20,  0, 10,  0, "PNEUMONIE"},
-    {10, 30, 20, 15, 10, "TUMEUR"},
-    {15, 10,  5,  4,  0, "PLAIES"},
-    {10, 10, 10, 10,  0, "LESIONS"},
-    {30, 20, 20, 20,  5, "HEMORRAGIE"},
-    {25, 15, 10, 17,  0, "INFECTION"},
-    {15, 10,  5,  5,  0, "INFLAMMATION"},
-    {10, 15, 20, 15,  0, "IMMUNITE"},
-    { 0, 20,  0, 15,  10, "PARANOIA"},
-    { 0, 15, 15, 20,  10, "FOLIE"},
-    { 0, 30, 30, 30,  20, "ARRET TOTAL"},
+    {10, 10,  0,  2,  0, "NAUSEE", "DONNE DES NAUSEES"},
+    {15, 10,  0, 10,  0, "VOMISSEMENT", "PROVOQUE DES REJETS GESTRIQUES"},
+    {10,  5,  0,  3,  0, "TOUX", "LA PROJECTION DE PARTICULE AUGMENTE LA CONTAGION"},
+    {15, 20,  5, 10,  0, "PNEUMONIE", "AFFECTION PULMONAIRE PEU MORTELLE"},
+    { 0, 30, 20, 15, 10, "TUMEUR", "PEU CONTAGIEUX, MAIS MORTEL"},
+    {15, 10,  5,  4,  0, "PLAIES", "LA PEAU S'ASSECHE ET DEVIENT CASSANTE"},
+    {10, 10, 10, 10,  0, "LESIONS", "BLOQUE LA CICATRISATION"},
+    {30, 20, 20, 20,  5, "HEMORRAGIE", "BLOQUE L'ACTION DES PLAQUETTES"},
+    {25, 15, 10, 17,  0, "INFECTION", "CREER DES FOYERS D'INFECTION DANS LE CORPS"},
+    {15, 10,  5,  5,  0, "INFLAMMATION", "PROVOQUE DES ROUGEURS ET DEMANGEAISONS"},
+    {10, 15, 20, 15,  0, "IMMUNITE", "BLOQUE L'ACTION DU SYSTEME IMMUNITAIRE"},
+    { 0, 20,  0, 15,  10, "PARANOIA", "LES CHERCHEURS N'ARRIVENT PLUS A COOPERER ENTRE EUX"},
+    { 0, 15, 15, 20,  10, "FOLIE", "PROVOQUE DES CRISES D'HYSTERIES"},
+    { 0, 30, 30, 30,  20, "ARRET TOTAL", "EMPECHE LES ORGANES DE FONCTIONNER    "},
 };
 
 
 const struct mutation abilities_data[6] =
 {
-    {15,  0,  0, 10,  0, "FROID"},
-    {15,  0,  0, 15,  0, "CHAUD"},
-    { 0, 10,  4, 25, 10, "GENETIQUE"},
-    {10, 40, 20, 30, 20, "MUTATION+"},
-    {30, 10,  0, 30,  0, "ENVIRON"},
-    { 0, 15, 30, 15, 20, "MEDICAMENT"},
+    {15,  0,  0, 10,  0, "FROID", "RESISTANCE AU FROID"},
+    {15,  0,  0, 15,  0, "CHAUD", "RESISTANCE AU CHAUD"},
+    { 0, 10,  4, 25, 10, "GENETIQUE", "LE GENOME MUTE, RALENTISSANT LE SEQUENCAGE ADN"},
+    {10, 40, 20, 30, 20, "MUTATION+", "LE VIRUS MUTE, BLOQUANT LES CHERCHEURS"},
+    {30, 10,  0, 30,  0, "ENVIRON", "LE VIRUS RESISTE AUX ENVIRONNEMENTS LES PLUS HOSTILES"},
+    { 0, 15, 30, 15, 20, "MEDICAMENT", "RESISTANCES AU MEDICAMENTS"},
 };
 
 
 const struct mutation transmissions_data[13] =
 {
-    { 5,  0, 0,  9, 0, "AIR 1"},
-    {10, 10, 0, 15, 0, "AIR 2"},
-    {20, 10, 0, 20, 0, "AIR 3"},
-    {40, 15, 0, 30, 0, "AEROSOL"},
-    {10,  0, 0,  9, 0, "EAU 1"},
-    {20, 10, 0, 12, 0, "EAU 2"},
-    {20,  0, 0, 10, 0, "ANIMAL 1"},
-    {40, 10, 0, 16, 0, "ANIMAL 2"},
-    {20,  0, 0, 12, 0, "OISEAU 1"},
-    {40, 10, 0, 16, 0, "OISEAU 2"},
-    {10,  0, 0,  8, 0, "SANG 1"},
-    {20, 10, 0, 14, 0, "SANG 2"},
-    {40, 15, 0, 20, 0, "SANG 3"},
+    { 5,  0, 0,  9, 0, "AIR 1", "TRANSMISSION PAR L'AIR"},
+    {10, 10, 0, 15, 0, "AIR 2", "TRANSMISSION PAR L'AIR"},
+    {20, 10, 0, 20, 0, "AIR 3",  "TRANSMISSION PAR L'AIR"},
+    {40, 15, 0, 30, 0, "AEROSOL", "TRANSMISSION PAR L'AIR ET PAR L'EAU"},
+    {10,  0, 0,  9, 0, "EAU 1", "TRANSMISSION PAR L'EAU"},
+    {20, 10, 0, 12, 0, "EAU 2", "TRANSMISSION PAR L'EAU"},
+    {20,  0, 0, 10, 0, "ANIMAL 1", "LE VIRUS PEUT PASSER DE L'ANIMAL À L'HOMME"},
+    {40, 10, 0, 16, 0, "ANIMAL 2", "CAPACITE DE TRANSMISSION HOMME-ANIMAL"},
+    {20,  0, 0, 12, 0, "OISEAU 1", "CAPACITE DE TRANSMISSION ENTRE LES OISEAU"},
+    {40, 10, 0, 16, 0, "OISEAU 2", "LES OISEAUX DEVIENNENT DES VECTEURS VIRALS"},
+    {10,  0, 0,  8, 0, "SANG 1", "LE VIRUS SE TRANSMET PAR LE SANG"},
+    {20, 10, 0, 14, 0, "SANG 2", "LE VIRUS SE TRANSMET PAR LE SANG"},
+    {40, 15, 0, 20, 0, "SANG 3", "LE VIRUS SE TRANSMET PAR LE SANG"},
 };
 
 
-const struct mutation default_value = {0, 0, 0, 0, 0, "NONE"};
+const struct mutation default_value = {0, 0, 0, 0, 0, "NONE", "NONE"};
 
 
 /* Encoded data for the world
diff --git a/src/display_engine.c b/src/display_engine.c
index 6cc5fd6..afe73d7 100644
--- a/src/display_engine.c
+++ b/src/display_engine.c
@@ -146,6 +146,28 @@ void display_mutation_buy(const struct cursor c, const int mutation_menu, const
 }
 
 
+void display_mutation_description(const char *name, const char *description, const int mutation_menu, const int id)
+{
+    extern const bopti_image_t img_mutations;
+
+    int decalage = 0;
+
+    dclear(C_WHITE);
+
+    display_background(8);
+    dsubimage(3, 21, &img_mutations, 16 * (mutation_menu - 1), 16 * (id - 1), 15, 15, DIMAGE_NONE);
+    dprint(47, 25, C_BLACK, name);
+    
+    for (int i = 0; i < 4; i ++)
+    {
+        dtext_opt(25, 33 + i * 7, C_BLACK, C_WHITE, 0 ,0, description + decalage, 16 );
+        if (description[decalage+1] == '\0') break;
+        else decalage += 16;
+    }
+    dupdate();
+}
+
+
 void display_message(const char *msg[5])
 {
     dclear(C_WHITE);
diff --git a/src/display_engine.h b/src/display_engine.h
index 20290cc..ee5ff99 100644
--- a/src/display_engine.h
+++ b/src/display_engine.h
@@ -15,6 +15,9 @@ void display_mutation(const int table[4][8], const struct cursor c, const int mu
 // mutation_selected : display the mutation's informations screen
 void display_mutation_buy(const struct cursor c, const int mutation_menu, const int table[4][8], const int button_selected, const struct game *current_game);
 
+// display_mutation_description : display the description of the selected mutation
+void display_mutation_description(const char *name, const char *description, const int mutation_menu, const int id);
+
 // output_error : display text and message background
 void display_message(const char *msg[5]);
 
diff --git a/src/mutation_engine.c b/src/mutation_engine.c
index d8eecf7..c31166d 100644
--- a/src/mutation_engine.c
+++ b/src/mutation_engine.c
@@ -109,6 +109,11 @@ int mutation_buy(struct game *current_game, const struct cursor c, const int mut
 
         if (key == KEY_DOWN || key == KEY_UP) button_selected = (button_selected + 1) % 2;
         if (key == KEY_ALPHA) return 1;
+        if (key == KEY_OPTN)
+        {
+            display_mutation_description(mutation_data->name, mutation_data->description, mutation_menu, id);
+            getkey();
+        }
         if (key == KEY_SHIFT)
         {
             if (!button_selected) return 0;
diff --git a/src/mutation_engine.h b/src/mutation_engine.h
index f41a68b..0a31ef0 100644
--- a/src/mutation_engine.h
+++ b/src/mutation_engine.h
@@ -21,7 +21,7 @@ struct mutation
     int contagion, severity, lethality, dna, changement;
 
     // Name of the mutation
-    char *name;
+    char *name, *description;
 };
 
 // get_mutation : return the mutation table to display