diff --git a/media/sound/sound_drop_enemy.wav b/media/sound/sound_drop_enemy.wav
old mode 100644
new mode 100755
index e69de29..ad072c2
Binary files a/media/sound/sound_drop_enemy.wav and b/media/sound/sound_drop_enemy.wav differ
diff --git a/media/sound/sound_drop_splat.wav b/media/sound/sound_drop_splat.wav
old mode 100644
new mode 100755
index e69de29..bbc4676
Binary files a/media/sound/sound_drop_splat.wav and b/media/sound/sound_drop_splat.wav differ
diff --git a/media/sound/sound_menu_logo.wav b/media/sound/sound_menu_logo.wav
old mode 100644
new mode 100755
index e69de29..512e1e3
Binary files a/media/sound/sound_menu_logo.wav and b/media/sound/sound_menu_logo.wav differ
diff --git a/media/sound/sound_menu_start.wav b/media/sound/sound_menu_start.wav
old mode 100644
new mode 100755
index e69de29..9870c1f
Binary files a/media/sound/sound_menu_start.wav and b/media/sound/sound_menu_start.wav differ
diff --git a/media/sound/sound_player_coin.wav b/media/sound/sound_player_coin.wav
old mode 100644
new mode 100755
index e69de29..09f9ca0
Binary files a/media/sound/sound_player_coin.wav and b/media/sound/sound_player_coin.wav differ
diff --git a/media/sound/sound_player_death.wav b/media/sound/sound_player_death.wav
old mode 100644
new mode 100755
index e69de29..aca90c8
Binary files a/media/sound/sound_player_death.wav and b/media/sound/sound_player_death.wav differ
diff --git a/media/sound/sound_player_jump.wav b/media/sound/sound_player_jump.wav
old mode 100644
new mode 100755
index e69de29..53f0114
Binary files a/media/sound/sound_player_jump.wav and b/media/sound/sound_player_jump.wav differ
diff --git a/source/const.h b/source/const.h
index 12b8a4d..57efd88 100644
--- a/source/const.h
+++ b/source/const.h
@@ -48,12 +48,12 @@ const Uint16 GAME_WINDOW_WIDTH = 320;
 const Uint16 GAME_WINDOW_HEIGHT = 234;
 
 const Uint8 TEST_ROOM = 118; // 161
-const Uint8 STARTING_ROOM = 25;
+const Uint8 STARTING_ROOM = 2;
 const Uint8 STARTING_PLAYER_TILE_X = 5;
 const Uint8 STARTING_PLAYER_TILE_Y = 11;
 const Uint8 ENEMY_HITBOX_REDUCTION = 4;
 const Uint8 COOLDOWN_TIME = 50;
-const Uint8 GRAVITY = 1;
+const Uint8 GRAVITY = 0;
 const Uint8 MAX_SPEED_Y = 5;
 const Uint8 BASE_SPEED = 1;
 const Uint8 MAX_SPEED = 8;
diff --git a/source/volcano.cpp b/source/volcano.cpp
index 0c93d8e..af27a94 100644
--- a/source/volcano.cpp
+++ b/source/volcano.cpp
@@ -17,6 +17,7 @@
 		JA_DeleteMusic(a); \
 	a = nullptr
 
+Uint8 _GRAVITY = 0;
 void allocatePointers()
 {
 	// Textures
@@ -855,32 +856,32 @@ void EndPlayer()
 void IniHud()
 {
 	loadTextureFromFile(hud.sprite, FILE_HUD.c_str(), renderer);
-	hud.src_rect.x = 0;
+	hud.src_rect.x = 0; // Origen de la textura para el marcador
 	hud.src_rect.y = 0;
 	hud.src_rect.w = 320;
 	hud.src_rect.h = 16;
 
-	hud.dst_rect.x = 0;
+	hud.dst_rect.x = 0; // Donde se pinta el marcador
 	hud.dst_rect.y = 224;
 	hud.dst_rect.w = 320;
 	hud.dst_rect.h = 16;
 
-	hud.num_src_rect.x = 0;
+	hud.num_src_rect.x = 0; // Coordenada al primer numero pequeño
 	hud.num_src_rect.y = 16;
 	hud.num_src_rect.w = 5;
 	hud.num_src_rect.h = 5;
 
-	hud.num_dst_rect.x = 0;
+	hud.num_dst_rect.x = 0; // Donde se pinta el numero pequeño
 	hud.num_dst_rect.y = 16;
 	hud.num_dst_rect.w = 5;
 	hud.num_dst_rect.h = 5;
 
-	hud.bignum_src_rect.x = 0;
+	hud.bignum_src_rect.x = 0; // Coordenada al primer numero grande
 	hud.bignum_src_rect.y = 21;
 	hud.bignum_src_rect.w = 7;
 	hud.bignum_src_rect.h = 7;
 
-	hud.bignum_dst_rect.x = 0;
+	hud.bignum_dst_rect.x = 0; // Donde se pinta el numero grande
 	hud.bignum_dst_rect.y = 21;
 	hud.bignum_dst_rect.w = 7;
 	hud.bignum_dst_rect.h = 7;
@@ -948,25 +949,16 @@ void KillPlayer()
 
 bool OnFloor()
 {
-	Uint8 tile_on_right_foot;
-	Uint8 tile_on_left_foot;
-	Uint8 tile_under_right_foot;
-	Uint8 tile_under_left_foot;
+	Uint8 tile_under_left_foot = ReadMapTile((player.dst_rect.x + 3) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h) / MAP_TILE_HEIGHT);
+	Uint8 tile_under_right_foot = ReadMapTile((player.dst_rect.x + player.dst_rect.w - 4) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h) / MAP_TILE_HEIGHT);
 
-	bool i_am_above_platform;
-	bool i_am_above_travesable;
-	bool i_am_on_background;
+	bool i_am_above_platform = ((tile_under_left_foot = TILE_PLATFORM) || (tile_under_right_foot = TILE_PLATFORM));
+	bool i_am_above_travesable = ((tile_under_left_foot = TILE_TRAVESABLE_PLATFORM) || (tile_under_right_foot = TILE_TRAVESABLE_PLATFORM));
 
-	tile_under_left_foot = ReadMapTile((player.dst_rect.x + 3) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h) / MAP_TILE_HEIGHT);
-	tile_under_right_foot = ReadMapTile((player.dst_rect.x + player.dst_rect.w - 4) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h) / MAP_TILE_HEIGHT);
+	Uint8 tile_on_left_foot = ReadMapTile((player.dst_rect.x + 3) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h - 1) / MAP_TILE_HEIGHT);
+	Uint8 tile_on_right_foot = ReadMapTile((player.dst_rect.x + player.dst_rect.w - 4) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h - 1) / MAP_TILE_HEIGHT);
 
-	i_am_above_platform = ((tile_under_left_foot = TILE_PLATFORM) || (tile_under_right_foot = TILE_PLATFORM));
-	i_am_above_travesable = ((tile_under_left_foot = TILE_TRAVESABLE_PLATFORM) || (tile_under_right_foot = TILE_TRAVESABLE_PLATFORM));
-
-	tile_on_left_foot = ReadMapTile((player.dst_rect.x + 3) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h - 1) / MAP_TILE_HEIGHT);
-	tile_on_right_foot = ReadMapTile((player.dst_rect.x + player.dst_rect.w - 4) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h - 1) / MAP_TILE_HEIGHT);
-
-	i_am_on_background = ((tile_on_left_foot = TILE_BACKGROUND) && (tile_on_right_foot = TILE_BACKGROUND));
+	bool i_am_on_background = ((tile_on_left_foot = TILE_BACKGROUND) && (tile_on_right_foot = TILE_BACKGROUND));
 
 	if (((i_am_above_platform) || (i_am_above_travesable)) && (i_am_on_background))
 		return true;
@@ -1440,7 +1432,7 @@ void ApplyGravity()
 	else
 	{
 		// Si no toca piso aleshores s'incrementa la velocitat vertical
-		player.speed_y = player.speed_y + GRAVITY;
+		player.speed_y = player.speed_y + _GRAVITY;
 
 		// La velocitat no pot ser mai superior a la altura d'un tile del mapa, per a que no els atravesse
 		//player.speed_y = std::max(std::min(player.speed_y, MAX_SPEED_Y), -(MAX_SPEED_Y));
@@ -1521,27 +1513,33 @@ void DrawHud()
 	if (prog.debug)
 	{
 		// Pinta el valor x,y del jugador
+		// Centena de X
 		hud.num_src_rect.x = (player.dst_rect.x / 100) * hud.num_src_rect.w;
 		hud.num_dst_rect.y = 1;
 		hud.num_dst_rect.x = 1;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// Decena de X
 		hud.num_src_rect.x = ((player.dst_rect.x % 100) / 10) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 5;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// Unidad de X
 		hud.num_src_rect.x = (player.dst_rect.x % 10) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 9;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// Centena de Y
 		hud.num_src_rect.x = (player.dst_rect.y / 100) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 17;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// Decena de Y
 		hud.num_src_rect.x = ((player.dst_rect.y % 100) / 10) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 21;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// Unidad de Y
 		hud.num_src_rect.x = (player.dst_rect.y % 10) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 25;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
@@ -1555,24 +1553,29 @@ void DrawHud()
 		hud.num_dst_rect.x = 33;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// tile_under_left_foot
 		hud.num_src_rect.x = (ReadMapTile((player.dst_rect.x + 3) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h) / MAP_TILE_HEIGHT)) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 37;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		//tile_under_right_foot
 		hud.num_src_rect.x = (ReadMapTile((player.dst_rect.x + player.dst_rect.w - 4) / MAP_TILE_WIDTH, (player.dst_rect.y + player.dst_rect.h) / MAP_TILE_HEIGHT)) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 41;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
-		// Pinta el numero d'habitaci�
+		// Pinta el numero de habitación
+		// Centena
 		hud.num_src_rect.x = (map.room / 100) * hud.num_src_rect.w;
 		hud.num_dst_rect.y = 1;
 		hud.num_dst_rect.x = 49;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// Decena
 		hud.num_src_rect.x = ((map.room % 100) / 10) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 53;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
 
+		// Unidad
 		hud.num_src_rect.x = (map.room % 10) * hud.num_src_rect.w;
 		hud.num_dst_rect.x = 57;
 		DrawSprite(hud.sprite, hud.num_src_rect, hud.num_dst_rect);
@@ -1799,7 +1802,7 @@ void IniProgram()
 	event = new SDL_Event();
 
 	prog.music_enabled = true;
-	prog.filter = true;
+	prog.filter = false;
 	SetProgSection(SECTION_MENU);
 	prog.debug = true;
 
@@ -1920,6 +1923,8 @@ int main(int argc, char *args[])
 
 						case SDL_SCANCODE_G:
 							player.lifes = 255;
+							_GRAVITY++;
+							_GRAVITY %= 2;
 							break;
 
 						case SDL_SCANCODE_M:
@@ -1935,6 +1940,14 @@ int main(int argc, char *args[])
 							LoadRoom(TEST_ROOM);
 							break;
 
+						case SDL_SCANCODE_Z:
+							player.dst_rect.y--;
+							break;
+
+						case SDL_SCANCODE_X:
+							player.dst_rect.y++;
+							break;
+
 						case SDL_SCANCODE_F1:
 							prog.debug = !prog.debug;
 							break;