diff --git a/source/animated_sprite.h b/source/animated_sprite.h
index 607a380..5a4035a 100644
--- a/source/animated_sprite.h
+++ b/source/animated_sprite.h
@@ -41,7 +41,7 @@ public:
     explicit AnimatedSprite(const AnimatedFile *animation);
 
     // Destructor
-    ~AnimatedSprite();
+    virtual ~AnimatedSprite();
 
     // Calcula el frame correspondiente a la animación actual
     void animate();
diff --git a/source/balloon.cpp b/source/balloon.cpp
index 7928a43..f74914f 100644
--- a/source/balloon.cpp
+++ b/source/balloon.cpp
@@ -1,5 +1,5 @@
 #include "balloon.h"
-#include <math.h>			 // for abs
+#include <cmath>			 // for abs
 #include "animated_sprite.h" // for AnimatedSprite
 #include "moving_sprite.h"	 // for MovingSprite
 #include "param.h"			 // for param
diff --git a/source/balloon.h b/source/balloon.h
index 9fc7389..15ad78f 100644
--- a/source/balloon.h
+++ b/source/balloon.h
@@ -1,12 +1,12 @@
 #pragma once
 
 #include <SDL2/SDL_stdinc.h> // for Uint8, Uint16, Uint32
+#include <memory>			 // for shared_ptr, unique_ptr
 #include <string>			 // for string
 #include <vector>			 // for vector
-#include <memory>
-#include "utils.h" // for Circle
-#include "animated_sprite.h"
-#include "texture.h"
+#include "animated_sprite.h" // for AnimatedSprite
+#include "utils.h"			 // for Circle
+class Texture;
 
 // Cantidad de elementos del vector con los valores de la deformación del globo al rebotar
 constexpr int MAX_BOUNCE = 10;
diff --git a/source/bullet.cpp b/source/bullet.cpp
index f2b1d47..8bc9dcd 100644
--- a/source/bullet.cpp
+++ b/source/bullet.cpp
@@ -1,7 +1,8 @@
 #include "bullet.h"
-#include "param.h"  // for param
-#include "sprite.h" // for Sprite
-#include <memory>   // for std::unique_ptr
+#include <memory>    // for unique_ptr, make_unique, shared_ptr
+#include "param.h"   // for param
+#include "sprite.h"  // for Sprite
+class Texture;
 
 constexpr int BULLET_WIDTH = 12;
 constexpr int BULLET_HEIGHT = 12;
diff --git a/source/bullet.h b/source/bullet.h
index 13d960d..45c20ae 100644
--- a/source/bullet.h
+++ b/source/bullet.h
@@ -1,11 +1,11 @@
 #pragma once
 
-#include <SDL2/SDL_rect.h>	 // for SDL_Rect
-#include <SDL2/SDL_stdinc.h> // for Uint8
-#include <memory>			 // for unique_ptr
-#include "sprite.h"			 // for Sprite
-#include "utils.h"			 // for Circle
-#include "texture.h"		 // lines 9-9
+#include <SDL2/SDL_rect.h>    // for SDL_Rect
+#include <SDL2/SDL_stdinc.h>  // for Uint8
+#include <memory>             // for shared_ptr, unique_ptr
+#include "sprite.h"           // for Sprite
+#include "utils.h"            // for Circle
+class Texture;
 
 // Enumeración para los diferentes tipos de balas
 enum class BulletType
diff --git a/source/define_buttons.cpp b/source/define_buttons.cpp
index bd9b606..fd60bdd 100644
--- a/source/define_buttons.cpp
+++ b/source/define_buttons.cpp
@@ -1,10 +1,12 @@
 #include "define_buttons.h"
-#include "lang.h"    // for getText
-#include "options.h" // for options
-#include "param.h"   // for param
-#include "section.h" // for name, SectionName, options, SectionOptions
-#include "text.h"    // for Text
-#include "utils.h"   // for OptionsController, Options, Param, ParamGame
+#include <utility>    // for move
+#include "input.h"    // for Input, InputType
+#include "lang.h"     // for getText
+#include "options.h"  // for options
+#include "param.h"    // for param
+#include "section.h"  // for Name, Options, name, options
+#include "text.h"     // for Text
+#include "utils.h"    // for OptionsController, Options, Param, ParamGame
 
 // Constructor
 DefineButtons::DefineButtons(std::unique_ptr<Text> text_)
diff --git a/source/define_buttons.h b/source/define_buttons.h
index 09a9653..385be41 100644
--- a/source/define_buttons.h
+++ b/source/define_buttons.h
@@ -1,12 +1,13 @@
 #pragma once
 
-#include <SDL2/SDL_events.h>         // for SDL_ControllerButtonEvent
-#include <SDL2/SDL_gamecontroller.h> // for SDL_GameControllerButton
-#include <string>                    // for string, basic_string
-#include <vector>                    // for vector
-#include "input.h"                   // for inputs_e
-#include "text.h"
-#include <memory>
+#include <SDL2/SDL_events.h>          // for SDL_ControllerButtonEvent
+#include <SDL2/SDL_gamecontroller.h>  // for SDL_GameControllerButton
+#include <memory>                     // for shared_ptr, unique_ptr
+#include <string>                     // for string
+#include <vector>                     // for vector
+class Input;
+class Text;
+enum class InputType : int;
 
 struct DefineButtonsButton
 {
diff --git a/source/director.cpp b/source/director.cpp
index 4fb96de..a447cdb 100644
--- a/source/director.cpp
+++ b/source/director.cpp
@@ -5,36 +5,37 @@
 #include <SDL2/SDL_error.h>			 // for SDL_GetError
 #include <SDL2/SDL_gamecontroller.h> // for SDL_CONTROLLER_BUTTON_B, SDL_CO...
 #include <SDL2/SDL_hints.h>			 // for SDL_SetHint, SDL_HINT_RENDER_DR...
-#include <SDL2/SDL_scancode.h>		 // for SDL_SCANCODE_DOWN, SDL_SCANCODE_E
-#include <SDL2/SDL_stdinc.h>		 // for Uint32
+#include <SDL2/SDL_scancode.h>		 // for SDL_SCANCODE_0, SDL_SCANCODE_DOWN
+#include <SDL2/SDL_stdinc.h>		 // for SDL_bool, Uint32
 #include <SDL2/SDL_timer.h>			 // for SDL_GetTicks
-#include <errno.h>					 // for errno, EACCES, EEXIST, ENAMETOO...
-#include <stdio.h>					 // for printf, perror, size_t
+#include <errno.h>					 // for errno, EEXIST, EACCES, ENAMETOO...
+#include <stdio.h>					 // for printf, perror
 #include <string.h>					 // for strcmp
-#include <sys/stat.h>				 // for stat, mkdir, S_IRWXU
+#include <sys/stat.h>				 // for mkdir, stat, S_IRWXU
 #include <unistd.h>					 // for getuid
 #include <cstdlib>					 // for exit, EXIT_FAILURE, rand, srand
 #include <iostream>					 // for basic_ostream, operator<<, cout
-#include <string>					 // for basic_string, operator+, allocator
-#include "asset.h"					 // for Asset, assetType
+#include <memory>					 // for make_unique, unique_ptr
+#include <string>					 // for operator+, allocator, char_traits
+#include "asset.h"					 // for Asset, AssetType
 #include "dbgtxt.h"					 // for dbg_init
 #include "game.h"					 // for Game, GAME_MODE_DEMO_OFF, GAME_...
-#include "global_inputs.h"
-#include "hiscore_table.h"		  // for HiScoreTable
-#include "input.h"				  // for inputs_e, Input
-#include "instructions.h"		  // for Instructions
-#include "intro.h"				  // for Intro
-#include "jail_audio.h"			  // for JA_DeleteMusic, JA_DeleteSound
-#include "logo.h"				  // for Logo
-#include "manage_hiscore_table.h" // for ManageHiScoreTable
-#include "on_screen_help.h"		  // for OnScreenHelp
-#include "options.h"			  // for options, loadOptionsFile, saveO...
-#include "param.h"				  // for param, loadParamsFromFile
-#include "screen.h"				  // for Screen
-#include "section.h"			  // for SectionName, name, options, SectionOptions
-#include "title.h"				  // for Title
-#include "utils.h"				  // for MusicFile, SoundFile, opt...
-#include <memory>
+#include "global_inputs.h"			 // for init
+#include "hiscore_table.h"			 // for HiScoreTable
+#include "input.h"					 // for Input, InputType
+#include "instructions.h"			 // for Instructions
+#include "intro.h"					 // for Intro
+#include "jail_audio.h"				 // for JA_LoadMusic, JA_LoadSound, JA_...
+#include "lang.h"					 // for Code, loadFromFile
+#include "logo.h"					 // for Logo
+#include "manage_hiscore_table.h"	 // for ManageHiScoreTable
+#include "on_screen_help.h"			 // for OnScreenHelp
+#include "options.h"				 // for options, loadOptionsFile, saveO...
+#include "param.h"					 // for param, loadParamsFromFile
+#include "screen.h"					 // for Screen
+#include "section.h"				 // for Name, name, Options, options
+#include "title.h"					 // for Title
+#include "utils.h"					 // for MusicFile, SoundFile, Options
 
 #ifndef _WIN32
 #include <pwd.h> // for getpwuid, passwd
diff --git a/source/director.h b/source/director.h
index 79afd2d..e0033d1 100644
--- a/source/director.h
+++ b/source/director.h
@@ -1,11 +1,12 @@
 #pragma once
 
-#include <SDL2/SDL_render.h> // for SDL_Renderer
-#include <SDL2/SDL_video.h>	 // for SDL_Window
-#include <string>			 // for string, basic_string
-#include <vector>			 // for vector
-#include "lang.h"			 // for lang_e
-#include "utils.h"			 // for MusicFile, SoundFile
+#include <SDL2/SDL_render.h>  // for SDL_Renderer
+#include <SDL2/SDL_video.h>   // for SDL_Window
+#include <string>             // for string
+#include <vector>             // for vector
+namespace lang { enum class Code : int; }
+struct MusicFile;
+struct SoundFile;
 
 // Textos
 constexpr char WINDOW_CAPTION[] = "Coffee Crisis Arcade Edition";
diff --git a/source/explosions.cpp b/source/explosions.cpp
index 1321900..0a662c2 100644
--- a/source/explosions.cpp
+++ b/source/explosions.cpp
@@ -1,6 +1,7 @@
 #include "explosions.h"
+#include <utility>           // for move
 #include "animated_sprite.h" // for AnimatedSprite
-class Texture;
+class Texture;               // lines 3-3
 
 // Constructor
 Explosions::Explosions()
diff --git a/source/explosions.h b/source/explosions.h
index ab07124..66649c9 100644
--- a/source/explosions.h
+++ b/source/explosions.h
@@ -1,10 +1,10 @@
 #pragma once
 
-#include <string> // for string
-#include <vector> // for vector
-#include "animated_sprite.h"
-#include <memory>
-#include "texture.h"
+#include <memory>  // for shared_ptr, unique_ptr
+#include <string>  // for string
+#include <vector>  // for vector
+class AnimatedSprite;
+class Texture;
 
 struct ExplosionTexture
 {
diff --git a/source/game.cpp b/source/game.cpp
index 085fd93..4b9d64e 100644
--- a/source/game.cpp
+++ b/source/game.cpp
@@ -1,39 +1,41 @@
 #include "game.h"
-#include <SDL2/SDL_blendmode.h> // for SDL_BLENDMODE_BLEND
-#include <SDL2/SDL_keycode.h>	// for SDLK_1, SDLK_2, SDLK_3, SDLK_h
-#include <SDL2/SDL_pixels.h>	// for SDL_PIXELFORMAT_RGBA8888
-#include <SDL2/SDL_rwops.h>		// for SDL_RWFromFile, SDL_RWclose, SDL_R...
-#include <SDL2/SDL_timer.h>		// for SDL_GetTicks
-#include <SDL2/SDL_video.h>		// for SDL_WINDOWEVENT_FOCUS_GAINED, SDL_...
-#include <stdlib.h>				// for rand
-#include <algorithm>			// for min
-#include <fstream>				// for basic_ifstream
-#include <iostream>				// for char_traits, basic_istream, ifstream
-#include <numeric>
+#include <SDL2/SDL_blendmode.h>	  // for SDL_BLENDMODE_BLEND
+#include <SDL2/SDL_events.h>	  // for SDL_PollEvent, SDL_Event, SDL_KEYDOWN
+#include <SDL2/SDL_keycode.h>	  // for SDLK_1, SDLK_2, SDLK_3, SDLK_4
+#include <SDL2/SDL_pixels.h>	  // for SDL_PIXELFORMAT_RGBA8888
+#include <SDL2/SDL_rwops.h>		  // for SDL_RWFromFile, SDL_RWclose, SDL_R...
+#include <SDL2/SDL_timer.h>		  // for SDL_GetTicks
+#include <SDL2/SDL_video.h>		  // for SDL_WINDOWEVENT_FOCUS_GAINED, SDL_...
+#include <stdlib.h>				  // for rand
+#include <algorithm>			  // for min, remove_if
+#include <fstream>				  // for basic_ostream, operator<<, basic_i...
+#include <iostream>				  // for cout
+#include <numeric>				  // for accumulate
+#include <utility>				  // for move
 #include "asset.h"				  // for Asset
 #include "background.h"			  // for Background
-#include "balloon.h"			  // for Balloon, BALLOON_SPEED_1, BALLOON_...
-#include "bullet.h"				  // for Bullet, BulletType::LEFT, BulletType::RIGHT
-#include "balloon_formations.h"	  // for Stage, EnemyFormations, enemyIni...
+#include "balloon.h"			  // for Balloon, BALLOON_SCORE_1, BALLOON_...
+#include "balloon_formations.h"	  // for Stage, BalloonFormationParams, Bal...
+#include "bullet.h"				  // for Bullet, BulletType, BulletMoveStatus
 #include "explosions.h"			  // for Explosions
-#include "fade.h"				  // for Fade, FadeType::RANDOM_SQUARE, FADE_VEN...
-#include "global_inputs.h"		  // for globalInputs::check
-#include "input.h"				  // for inputs_e, Input, INPUT_DO_NOT_ALLO...
+#include "fade.h"				  // for Fade, FadeType
+#include "global_inputs.h"		  // for check
+#include "input.h"				  // for InputType, Input, INPUT_DO_NOT_ALL...
 #include "item.h"				  // for Item, ITEM_COFFEE_MACHINE, ITEM_CLOCK
 #include "jail_audio.h"			  // for JA_PlaySound, JA_DeleteSound, JA_L...
 #include "lang.h"				  // for getText
 #include "manage_hiscore_table.h" // for ManageHiScoreTable
 #include "options.h"			  // for options
 #include "param.h"				  // for param
-#include "player.h"				  // for Player, PlayerStatus::PLAYING, PLA...
-#include "scoreboard.h"			  // for Scoreboard, scoreboard_modes_e
+#include "player.h"				  // for Player, PlayerStatus
+#include "scoreboard.h"			  // for Scoreboard, ScoreboardMode, SCOREB...
 #include "screen.h"				  // for Screen
+#include "section.h"			  // for Name, name, Options, options
 #include "smart_sprite.h"		  // for SmartSprite
 #include "text.h"				  // for Text, TEXT_CENTER
 #include "texture.h"			  // for Texture
-#include "dbgtxt.h"
-struct JA_Music_t;
-struct JA_Sound_t;
+struct JA_Music_t;				  // lines 35-35
+struct JA_Sound_t;				  // lines 36-36
 
 // Constructor
 Game::Game(int player_id, int current_stage, bool demo, JA_Music_t *music)
diff --git a/source/game.h b/source/game.h
index cd92313..3d18e1e 100644
--- a/source/game.h
+++ b/source/game.h
@@ -1,31 +1,29 @@
 #pragma once
 
-#include <SDL2/SDL_events.h> // for SDL_Event
 #include <SDL2/SDL_render.h> // for SDL_Renderer, SDL_Texture
 #include <SDL2/SDL_stdinc.h> // for Uint32
+#include <memory>			 // for shared_ptr, unique_ptr
 #include <string>			 // for string
 #include <vector>			 // for vector
-#include "section.h"		 // for SectionOptions
+#include "balloon.h"		 // for Balloon
+#include "player.h"			 // for Player
 #include "utils.h"			 // for DemoKeys, Color, HiScoreEntry
-#include <memory>
-#include "asset.h"				// lines 11-11
-#include "background.h"			// lines 12-12
-#include "balloon.h"			// lines 13-13
-#include "bullet.h"				// lines 14-14
-#include "balloon_formations.h" // lines 15-15
-#include "explosions.h"			// lines 16-16
-#include "fade.h"				// lines 17-17
-#include "input.h"				// lines 18-18
-#include "item.h"				// lines 19-19
-#include "player.h"				// lines 20-20
-#include "scoreboard.h"			// lines 21-21
-#include "screen.h"				// lines 22-22
-#include "smart_sprite.h"		// lines 23-23
-#include "text.h"				// lines 24-24
-#include "texture.h"			// lines 24-24
-enum class BulletType;
-struct JA_Music_t; // lines 26-26
-struct JA_Sound_t; // lines 27-27
+class Asset;
+class Background;
+class BalloonFormations;
+class Bullet;
+class Explosions;
+class Fade;
+class Input;
+class Item;
+class Scoreboard;
+class Screen;
+class SmartSprite;
+class Text;
+class Texture;
+enum class BulletType; // lines 26-26
+struct JA_Music_t;	   // lines 27-27
+struct JA_Sound_t;	   // lines 28-28
 
 // Modo demo
 constexpr bool GAME_MODE_DEMO_OFF = false;
diff --git a/source/game_logo.cpp b/source/game_logo.cpp
index a66a5cb..d43240c 100644
--- a/source/game_logo.cpp
+++ b/source/game_logo.cpp
@@ -1,6 +1,6 @@
 #include "game_logo.h"
+#include <SDL2/SDL_render.h> // for SDL_FLIP_HORIZONTAL
 #include <algorithm>         // for max
-#include <string>            // for basic_string
 #include "animated_sprite.h" // for AnimatedSprite
 #include "asset.h"           // for Asset
 #include "jail_audio.h"      // for JA_DeleteSound, JA_LoadSound, JA_PlaySound
@@ -17,17 +17,17 @@ GameLogo::GameLogo(int x, int y)
       coffee_texture_(std::make_shared<Texture>(Screen::get()->getRenderer(), Asset::get()->get("title_coffee.png"))),
       crisis_texture_(std::make_shared<Texture>(Screen::get()->getRenderer(), Asset::get()->get("title_crisis.png"))),
       arcade_edition_texture_(std::make_shared<Texture>(Screen::get()->getRenderer(), Asset::get()->get("title_arcade_edition.png"))),
-      
+
       dust_left_sprite_(std::make_unique<AnimatedSprite>(dust_texture_, Asset::get()->get("title_dust.ani"))),
       dust_right_sprite_(std::make_unique<AnimatedSprite>(dust_texture_, Asset::get()->get("title_dust.ani"))),
-      
+
       coffee_sprite_(std::make_unique<SmartSprite>(coffee_texture_)),
       crisis_sprite_(std::make_unique<SmartSprite>(crisis_texture_)),
-      
+
       arcade_edition_sprite_(std::make_unique<Sprite>((param.game.width - arcade_edition_texture_->getWidth()) / 2, param.title.arcade_edition_position, arcade_edition_texture_->getWidth(), arcade_edition_texture_->getHeight(), arcade_edition_texture_)),
-      
+
       crash_sound_(JA_LoadSound(Asset::get()->get("title.wav").c_str())),
-      
+
       x_(x),
       y_(y)
 {
diff --git a/source/game_logo.h b/source/game_logo.h
index 878db66..7904d9a 100644
--- a/source/game_logo.h
+++ b/source/game_logo.h
@@ -1,13 +1,11 @@
 #pragma once
 
-#include <SDL2/SDL_render.h> // for SDL_Renderer
-#include <memory>
-#include "texture.h"
-#include "animated_sprite.h"
-#include "smart_sprite.h"
-#include "sprite.h"
-
-struct JA_Sound_t;
+#include <memory> // for unique_ptr, shared_ptr
+class AnimatedSprite;
+class SmartSprite;
+class Sprite;
+class Texture;
+struct JA_Sound_t; // lines 10-10
 
 // Clase GameLogo
 class GameLogo
diff --git a/source/hiscore_table.cpp b/source/hiscore_table.cpp
index 1fdb6f7..ae6624b 100644
--- a/source/hiscore_table.cpp
+++ b/source/hiscore_table.cpp
@@ -1,5 +1,6 @@
 #include "hiscore_table.h"
 #include <SDL2/SDL_blendmode.h> // for SDL_BLENDMODE_BLEND
+#include <SDL2/SDL_events.h>	// for SDL_PollEvent, SDL_Event, SDL_QUIT
 #include <SDL2/SDL_pixels.h>	// for SDL_PIXELFORMAT_RGBA8888
 #include <SDL2/SDL_timer.h>		// for SDL_GetTicks
 #include <SDL2/SDL_video.h>		// for SDL_WINDOWEVENT_SIZE_CHANGED
@@ -7,15 +8,17 @@
 #include <vector>				// for vector
 #include "asset.h"				// for Asset
 #include "background.h"			// for Background
-#include "global_inputs.h"		// for globalInputs::check
+#include "fade.h"				// for Fade, FadeMode, FadeType
+#include "global_inputs.h"		// for check
 #include "input.h"				// for Input
 #include "jail_audio.h"			// for JA_GetMusicState, JA_Music_state
 #include "lang.h"				// for getText
 #include "options.h"			// for options
 #include "param.h"				// for param
 #include "screen.h"				// for Screen
-#include "text.h"				// for Text, TEXT_CENTER, TEXT_SHADOW, TEXT_COLOR
-#include "utils.h"				// for Param, ParamGame, HiScoreEntry
+#include "section.h"			// for Name, name, Options, options
+#include "text.h"				// for Text, TEXT_CENTER, TEXT_SHADOW, TEXT...
+#include "utils.h"				// for Param, ParamGame, Color, HiScoreEntry
 
 // Constructor
 HiScoreTable::HiScoreTable(JA_Music_t *music)
diff --git a/source/hiscore_table.h b/source/hiscore_table.h
index dac0b4a..a569d66 100644
--- a/source/hiscore_table.h
+++ b/source/hiscore_table.h
@@ -1,15 +1,15 @@
 #pragma once
 
-#include <SDL2/SDL_events.h> // for SDL_Event
 #include <SDL2/SDL_rect.h>	 // for SDL_Rect
 #include <SDL2/SDL_render.h> // for SDL_Renderer, SDL_Texture
 #include <SDL2/SDL_stdinc.h> // for Uint16, Uint32
-#include <memory>
-#include <string> // for string
-#include "fade.h"
-#include "section.h" // for SectionOptions
-#include "background.h"
-#include "text.h"
+#include <memory>			 // for unique_ptr
+#include <string>			 // for string
+class Background;
+class Fade;
+class Text;
+enum class FadeMode : Uint8;
+struct JA_Music_t; // lines 14-14
 
 struct JA_Music_t;
 
diff --git a/source/moving_sprite.h b/source/moving_sprite.h
index d77d25f..6c501f2 100644
--- a/source/moving_sprite.h
+++ b/source/moving_sprite.h
@@ -41,6 +41,9 @@ public:
     explicit MovingSprite(float x = 0, float y = 0, int w = 0, int h = 0, float velx = 0, float vely = 0, float accelx = 0, float accely = 0, std::shared_ptr<Texture> texture = nullptr);
     explicit MovingSprite(std::shared_ptr<Texture> texture = nullptr);
 
+    // Destructor
+    virtual ~MovingSprite() = default;
+
     // Mueve el sprite
     void move();
 
diff --git a/source/sprite.h b/source/sprite.h
index bd5300a..476925a 100644
--- a/source/sprite.h
+++ b/source/sprite.h
@@ -20,7 +20,7 @@ public:
     explicit Sprite(std::shared_ptr<Texture> texture = nullptr);
 
     // Destructor
-    ~Sprite() = default;
+    virtual ~Sprite() = default;
 
     // Muestra el sprite por pantalla
     virtual void render();