diff --git a/CMakeLists.txt b/CMakeLists.txt
index 98adcb5..b003fff 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,8 +32,6 @@ set(ASSETS_cg
   assets-cg/mutations.png
   assets-cg/cursor.png
   assets-cg/title.png
-  assets-cg/dna.png
-  assets-cg/explosion.png
   assets-cg/mutations_table/abilities_1.txt
   assets-cg/mutations_table/abilities_2.txt
   assets-cg/mutations_table/abilities_3.txt
diff --git a/assets-cg/dna.png b/assets-cg/dna.png
deleted file mode 100644
index 02cffb0..0000000
Binary files a/assets-cg/dna.png and /dev/null differ
diff --git a/assets-cg/explosion.png b/assets-cg/explosion.png
deleted file mode 100644
index 771d8af..0000000
Binary files a/assets-cg/explosion.png and /dev/null differ
diff --git a/assets-cg/title.png b/assets-cg/title.png
index 545b734..fbccf38 100644
Binary files a/assets-cg/title.png and b/assets-cg/title.png differ
diff --git a/src/core.c b/src/core.c
index 585492f..3fd433d 100644
--- a/src/core.c
+++ b/src/core.c
@@ -9,7 +9,7 @@
 #include "display_engine.h"
 
 
-int next_frame(struct game *current_game, int *dna_animation, int *vaccine)
+int next_frame(struct game *current_game, int *vaccine)
 {
     for (int i = 0; current_game->planes[i]; i++)
     {
@@ -58,8 +58,6 @@ int next_frame(struct game *current_game, int *dna_animation, int *vaccine)
     current_game->time += ENGINE_TICK;
     current_game->total_time += ENGINE_TICK;
 
-    if (!(current_game->time % 150)) *dna_animation = (*dna_animation + 1) % 16;
-
     if (current_game->time > limit_tick)
     {
         // Reset internal clock
diff --git a/src/core.h b/src/core.h
index 95aff76..425e19d 100644
--- a/src/core.h
+++ b/src/core.h
@@ -6,7 +6,6 @@
 // Duration for internal clock (ms)
 #define ENGINE_TICK 50
 #define CURSOR_TICK 110
-#define DNA_ANIMATION_TICK 150
 
 // Duration for DNA points and infectious model (ms)
 #define LIMIT_TICK 10000
@@ -90,7 +89,7 @@ struct cursor
 int get_inputs(const int background, int *mutation_menu, int *boost);
 
 // next_frame : compute the plane's positions
-int next_frame(struct game *current_game, int *dna_animation, int *vaccine);
+int next_frame(struct game *current_game, int *vaccine);
 
 // rtc_key : get the key with RTC system
 int rtc_key(void);
diff --git a/src/display_engine.c b/src/display_engine.c
index 1d8c066..6cfdae0 100644
--- a/src/display_engine.c
+++ b/src/display_engine.c
@@ -40,11 +40,10 @@ void display_background(const int background)
 }
 
 
-void display_foreground(const int background, const struct game *current_game, const int mutation_menu, const int dna_animation)
+void display_foreground(const int background, const struct game *current_game, const int mutation_menu)
 {
     extern const bopti_image_t img_mutations;
     extern const bopti_image_t img_planes;
-    extern const bopti_image_t img_dna;
     extern const uint8_t world[184][396];
 
     GUNUSED int length;
@@ -68,9 +67,6 @@ void display_foreground(const int background, const struct game *current_game, c
                 if (current_game->planes[i]->y + 8 < 184) dsubimage(current_game->planes[i]->x - 4, current_game->planes[i]->y - 4, &img_planes, 0, 8 * (current_game->planes[i]->direction - 1), 8, 8, DIMAGE_NONE);
             }
 
-            // Animated DNA
-            dsubimage(1, 51, &img_dna, dna_animation * 8, 0, 7, 12, DIMAGE_NONE);
-            
             // Research bar 
             int length = 73 * current_game->research / current_game->limit;
             dprint(30, 200, C_WHITE, "%d", current_game->dna);
@@ -89,7 +85,7 @@ void display_foreground(const int background, const struct game *current_game, c
             */
 
             // Display if boost is activated
-            if (current_game->boost) dprint(0, 0, C_BLACK, "+");
+            if (current_game->boost) dprint(0, 0, C_WHITE, "+");
 
             break;
 
diff --git a/src/display_engine.h b/src/display_engine.h
index 99bc213..cd4fc31 100644
--- a/src/display_engine.h
+++ b/src/display_engine.h
@@ -7,7 +7,7 @@
 void display_background(const int background);
 
 // display_foreground : display the foreground, planes, statistics
-void display_foreground(const int background, const struct game *current_game, const int mutation_menu, const int dna_animation);
+void display_foreground(const int background, const struct game *current_game, const int mutation_menu);
 
 // display_mutation : display the mutation selection screen
 void display_mutation(const int table[4][8], const struct cursor c, const int mutation_menu);
diff --git a/src/main.c b/src/main.c
index 8ba27cb..835d2b5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -86,7 +86,7 @@ int main(void)
         // Display stats at the end of the game
         dclear(C_WHITE);
         display_background(6);
-        display_foreground(6, &current_game, 0, 0);
+        display_foreground(6, &current_game, 0);
         dupdate();
         sleep_ms(250);
 
@@ -106,35 +106,13 @@ int main(void)
 static void title_screen(void)
 {
     extern bopti_image_t img_title;
-    extern bopti_image_t img_explosion;
 
     dclear(C_BLACK);
 
-    dsubimage(0, 0, &img_title, 0, 0, DWIDTH, DHEIGHT, DIMAGE_NONE);
-    dprint_opt(32, 120, C_WHITE, C_NONE, 0, 0, "VERSION %s", VERSION, -1);
+    dimage(0, 0, &img_title);
+    dprint_opt(5, 200, C_WHITE, C_NONE, 0, 0, "VERSION %s", VERSION, -1);
     dupdate();
-    sleep_ms(1000);
     
-
-    for (int frame = 0; frame < 5; frame ++)
-    {
-        dsubimage(0, 0, &img_title, 0, 0, DWIDTH, DHEIGHT, DIMAGE_NONE);
-        dsubimage(225, 70, &img_explosion, 123 * frame, 0, 120, 120, DIMAGE_NONE);
-        dupdate();
-        sleep_ms(80);
-    }
-
-    sleep_ms(120);
-    for (int times = 0; times < 3; times ++)
-    {
-        dsubimage(0, 0, &img_title, 0, DHEIGHT, DWIDTH, DHEIGHT, DIMAGE_NONE);
-        dupdate();
-        sleep_ms(200);
-        dsubimage(0, 0, &img_title, 0, DHEIGHT*2, DWIDTH, DHEIGHT, DIMAGE_NONE);
-        dupdate();
-        sleep_ms(200);
-    }
-
     getkey();
 }
 
@@ -142,7 +120,7 @@ static void title_screen(void)
 int main_loop(struct game *current_game)
 {
     int background = 1, mutation_menu = 4;
-    int end = 0, to_save = 1, dna_animation = 0, vaccine = 0;
+    int end = 0, to_save = 1, vaccine = 0;
 
     static volatile int tick = 1;
     int t = timer_configure(TIMER_ANY, ENGINE_TICK*1000, GINT_CALL(callback_tick, &tick));
@@ -157,11 +135,11 @@ int main_loop(struct game *current_game)
         // Update the screen
         dclear(C_WHITE);
         display_background(background);
-        display_foreground(background, current_game, mutation_menu, dna_animation);
+        display_foreground(background, current_game, mutation_menu);
         dupdate();
 
         // Compute the motion of planes, DNA points and infectious model
-        to_save = next_frame(current_game, &dna_animation, &vaccine);
+        to_save = next_frame(current_game, &vaccine);
         if (!to_save) return 0;
         
         // Get inputs from the keyboard and manage it