diff --git a/source/defines.h b/source/defines.h
index 32e954d..6f1ae65 100644
--- a/source/defines.h
+++ b/source/defines.h
@@ -153,19 +153,34 @@ constexpr float SHAPE_SCALE_MAX = 3.0f;            // Escala máxima (300%)
 constexpr float SHAPE_SCALE_STEP = 0.1f;           // Incremento por pulsación
 constexpr float SHAPE_SCALE_DEFAULT = 1.0f;        // Escala por defecto (100%)
 
-// Configuración de Modo DEMO (auto-play)
-constexpr float DEMO_ACTION_INTERVAL_MIN = 3.0f;   // Tiempo mínimo entre acciones (segundos)
-constexpr float DEMO_ACTION_INTERVAL_MAX = 8.0f;   // Tiempo máximo entre acciones (segundos)
+// Configuración de Modo DEMO (auto-play completo)
+constexpr float DEMO_ACTION_INTERVAL_MIN = 2.0f;   // Tiempo mínimo entre acciones (segundos)
+constexpr float DEMO_ACTION_INTERVAL_MAX = 6.0f;   // Tiempo máximo entre acciones (segundos)
 
-// Pesos de probabilidad para cada tipo de acción (valores relativos, se normalizan)
-constexpr int DEMO_WEIGHT_GRAVITY = 15;            // Cambiar dirección gravedad (15%)
-constexpr int DEMO_WEIGHT_SHAPE = 25;              // Activar figura 3D (25%)
-constexpr int DEMO_WEIGHT_THEME = 20;              // Cambiar tema de colores (20%)
-constexpr int DEMO_WEIGHT_SCENARIO = 15;           // Cambiar número de pelotas (15%)
+// Pesos de probabilidad DEMO MODE (valores relativos, se normalizan)
+constexpr int DEMO_WEIGHT_GRAVITY_DIR = 10;        // Cambiar dirección gravedad (10%)
+constexpr int DEMO_WEIGHT_GRAVITY_TOGGLE = 8;      // Toggle gravedad ON/OFF (8%)
+constexpr int DEMO_WEIGHT_SHAPE = 20;              // Activar figura 3D (20%)
+constexpr int DEMO_WEIGHT_TOGGLE_PHYSICS = 12;     // Toggle física ↔ figura (12%)
+constexpr int DEMO_WEIGHT_REGENERATE_SHAPE = 8;    // Re-generar misma figura (8%)
+constexpr int DEMO_WEIGHT_THEME = 15;              // Cambiar tema de colores (15%)
+constexpr int DEMO_WEIGHT_SCENARIO = 10;           // Cambiar número de pelotas (10%)
 constexpr int DEMO_WEIGHT_IMPULSE = 10;            // Aplicar impulso (SPACE) (10%)
-constexpr int DEMO_WEIGHT_DEPTH_ZOOM = 5;          // Toggle profundidad (5%)
-constexpr int DEMO_WEIGHT_SHAPE_SCALE = 5;         // Cambiar escala figura (5%)
-constexpr int DEMO_WEIGHT_SPRITE = 5;              // Cambiar sprite (5%)
-// TOTAL: 100 (se pueden ajustar para priorizar acciones)
+constexpr int DEMO_WEIGHT_DEPTH_ZOOM = 3;          // Toggle profundidad (3%)
+constexpr int DEMO_WEIGHT_SHAPE_SCALE = 2;         // Cambiar escala figura (2%)
+constexpr int DEMO_WEIGHT_SPRITE = 2;              // Cambiar sprite (2%)
+// TOTAL: 100
+
+// Configuración de Modo DEMO LITE (solo física/figuras)
+constexpr float DEMO_LITE_ACTION_INTERVAL_MIN = 1.5f;  // Más rápido que demo completo
+constexpr float DEMO_LITE_ACTION_INTERVAL_MAX = 4.0f;
+
+// Pesos de probabilidad DEMO LITE (solo física/figuras, sin cambios de escenario/tema)
+constexpr int DEMO_LITE_WEIGHT_GRAVITY_DIR = 25;   // Cambiar dirección gravedad (25%)
+constexpr int DEMO_LITE_WEIGHT_GRAVITY_TOGGLE = 20;// Toggle gravedad ON/OFF (20%)
+constexpr int DEMO_LITE_WEIGHT_SHAPE = 25;         // Activar figura 3D (25%)
+constexpr int DEMO_LITE_WEIGHT_TOGGLE_PHYSICS = 20;// Toggle física ↔ figura (20%)
+constexpr int DEMO_LITE_WEIGHT_IMPULSE = 10;       // Aplicar impulso (10%)
+// TOTAL: 100
 
 constexpr float PI = 3.14159265358979323846f;      // Constante PI
\ No newline at end of file
diff --git a/source/engine.cpp b/source/engine.cpp
index aad084e..65f06e3 100644
--- a/source/engine.cpp
+++ b/source/engine.cpp
@@ -469,11 +469,17 @@ void Engine::handleEvents() {
                     toggleIntegerScaling();
                     break;
 
-                // Toggle Modo DEMO (auto-play)
+                // Toggle Modo DEMO COMPLETO (auto-play)
                 case SDLK_D:
                     demo_mode_enabled_ = !demo_mode_enabled_;
                     if (demo_mode_enabled_) {
-                        // Al activar: inicializar timer con primer intervalo aleatorio
+                        // Desactivar demo lite si estaba activo (mutuamente excluyentes)
+                        demo_lite_enabled_ = false;
+
+                        // Randomizar TODO al activar
+                        randomizeOnDemoStart(false);
+
+                        // Inicializar timer con primer intervalo aleatorio
                         demo_timer_ = 0.0f;
                         float interval_range = DEMO_ACTION_INTERVAL_MAX - DEMO_ACTION_INTERVAL_MIN;
                         demo_next_action_time_ = DEMO_ACTION_INTERVAL_MIN + (rand() % 1000) / 1000.0f * interval_range;
@@ -489,6 +495,33 @@ void Engine::handleEvents() {
                         text_init_time_ = SDL_GetTicks();
                     }
                     break;
+
+                // Toggle Modo DEMO LITE (solo física/figuras)
+                case SDLK_L:
+                    demo_lite_enabled_ = !demo_lite_enabled_;
+                    if (demo_lite_enabled_) {
+                        // Desactivar demo completo si estaba activo (mutuamente excluyentes)
+                        demo_mode_enabled_ = false;
+
+                        // Randomizar solo física/figura (mantiene escenario y tema)
+                        randomizeOnDemoStart(true);
+
+                        // Inicializar timer con primer intervalo aleatorio (más rápido)
+                        demo_timer_ = 0.0f;
+                        float interval_range = DEMO_LITE_ACTION_INTERVAL_MAX - DEMO_LITE_ACTION_INTERVAL_MIN;
+                        demo_next_action_time_ = DEMO_LITE_ACTION_INTERVAL_MIN + (rand() % 1000) / 1000.0f * interval_range;
+
+                        // Mostrar texto de activación
+                        text_ = "DEMO LITE ON";
+                        show_text_ = true;
+                        text_init_time_ = SDL_GetTicks();
+                    } else {
+                        // Al desactivar: mostrar texto
+                        text_ = "DEMO LITE OFF";
+                        show_text_ = true;
+                        text_init_time_ = SDL_GetTicks();
+                    }
+                    break;
             }
         }
     }
@@ -629,13 +662,19 @@ void Engine::render() {
         dbg_print(8, 72, mode_text.c_str(), 0, 255, 128);  // Verde claro para modo
     }
 
-    // Mostrar indicador "DEMO MODE" permanente cuando está activo (independiente de show_debug_)
+    // Mostrar indicador "DEMO MODE" o "DEMO LITE" permanente (independiente de show_debug_)
     if (demo_mode_enabled_) {
         // Centrar texto horizontalmente
         const char* demo_text = "DEMO MODE";
         int demo_text_width = static_cast<int>(strlen(demo_text) * 8);  // 8 píxeles por carácter
         int demo_x = (current_screen_width_ - demo_text_width) / 2;
         dbg_print(demo_x, 8, demo_text, 255, 128, 0);  // Naranja brillante
+    } else if (demo_lite_enabled_) {
+        // Centrar texto horizontalmente
+        const char* demo_lite_text = "DEMO LITE";
+        int demo_lite_text_width = static_cast<int>(strlen(demo_lite_text) * 8);
+        int demo_lite_x = (current_screen_width_ - demo_lite_text_width) / 2;
+        dbg_print(demo_lite_x, 8, demo_lite_text, 128, 200, 255);  // Azul claro
     }
 
     SDL_RenderPresent(renderer_);
@@ -675,6 +714,9 @@ void Engine::initBalls(int value) {
 }
 
 void Engine::setText() {
+    // Suprimir textos durante modos demo
+    if (demo_mode_enabled_ || demo_lite_enabled_) return;
+
     int num_balls = test_.at(scenario_);
     if (num_balls == 1) {
         text_ = "1 PELOTA";
@@ -1167,12 +1209,14 @@ void Engine::startThemeTransition(ColorTheme new_theme) {
     transitioning_ = true;
     transition_progress_ = 0.0f;
 
-    // Mostrar nombre del tema (igual que selección directa con KP_1-6)
-    ThemeColors& theme = themes_[static_cast<int>(new_theme)];
-    text_ = theme.name_es;
-    text_pos_ = (current_screen_width_ - static_cast<int>(text_.length() * 8)) / 2;
-    show_text_ = true;
-    text_init_time_ = SDL_GetTicks();
+    // Mostrar nombre del tema (solo si NO estamos en modo demo)
+    if (!demo_mode_enabled_ && !demo_lite_enabled_) {
+        ThemeColors& theme = themes_[static_cast<int>(new_theme)];
+        text_ = theme.name_es;
+        text_pos_ = (current_screen_width_ - static_cast<int>(text_.length() * 8)) / 2;
+        show_text_ = true;
+        text_init_time_ = SDL_GetTicks();
+    }
 }
 
 Color Engine::getInterpolatedColor(size_t ball_index) const {
@@ -1199,110 +1243,279 @@ Color Engine::getInterpolatedColor(size_t ball_index) const {
 
 // Sistema de Modo DEMO (auto-play)
 void Engine::updateDemoMode() {
-    if (!demo_mode_enabled_) return;
+    // Verificar si algún modo está activo
+    bool is_demo_active = demo_mode_enabled_ || demo_lite_enabled_;
+    if (!is_demo_active) return;
 
     // Actualizar timer
     demo_timer_ += delta_time_;
 
     // Si es hora de ejecutar acción
     if (demo_timer_ >= demo_next_action_time_) {
-        performDemoAction();
+        // Ejecutar acción según modo activo
+        bool is_lite = demo_lite_enabled_;
+        performDemoAction(is_lite);
 
         // Resetear timer y calcular próximo intervalo aleatorio
         demo_timer_ = 0.0f;
-        float interval_range = DEMO_ACTION_INTERVAL_MAX - DEMO_ACTION_INTERVAL_MIN;
-        demo_next_action_time_ = DEMO_ACTION_INTERVAL_MIN + (rand() % 1000) / 1000.0f * interval_range;
+
+        // Usar intervalos diferentes según modo
+        float interval_min = is_lite ? DEMO_LITE_ACTION_INTERVAL_MIN : DEMO_ACTION_INTERVAL_MIN;
+        float interval_max = is_lite ? DEMO_LITE_ACTION_INTERVAL_MAX : DEMO_ACTION_INTERVAL_MAX;
+        float interval_range = interval_max - interval_min;
+        demo_next_action_time_ = interval_min + (rand() % 1000) / 1000.0f * interval_range;
     }
 }
 
-void Engine::performDemoAction() {
-    // Calcular suma total de pesos
-    const int TOTAL_WEIGHT = DEMO_WEIGHT_GRAVITY + DEMO_WEIGHT_SHAPE + DEMO_WEIGHT_THEME
-                            + DEMO_WEIGHT_SCENARIO + DEMO_WEIGHT_IMPULSE + DEMO_WEIGHT_DEPTH_ZOOM
-                            + DEMO_WEIGHT_SHAPE_SCALE + DEMO_WEIGHT_SPRITE;
-
-    // Generar número aleatorio entre 0 y TOTAL_WEIGHT
-    int random_value = rand() % TOTAL_WEIGHT;
-
-    // Determinar acción según pesos acumulados
+void Engine::performDemoAction(bool is_lite) {
+    int TOTAL_WEIGHT;
+    int random_value;
     int accumulated_weight = 0;
 
-    // Acción: Cambiar gravedad (15%)
-    accumulated_weight += DEMO_WEIGHT_GRAVITY;
-    if (random_value < accumulated_weight) {
+    if (is_lite) {
+        // DEMO LITE: Solo física/figuras
+        TOTAL_WEIGHT = DEMO_LITE_WEIGHT_GRAVITY_DIR + DEMO_LITE_WEIGHT_GRAVITY_TOGGLE
+                     + DEMO_LITE_WEIGHT_SHAPE + DEMO_LITE_WEIGHT_TOGGLE_PHYSICS
+                     + DEMO_LITE_WEIGHT_IMPULSE;
+        random_value = rand() % TOTAL_WEIGHT;
+
+        // Cambiar dirección gravedad (25%)
+        accumulated_weight += DEMO_LITE_WEIGHT_GRAVITY_DIR;
+        if (random_value < accumulated_weight) {
+            GravityDirection new_direction = static_cast<GravityDirection>(rand() % 4);
+            changeGravityDirection(new_direction);
+            return;
+        }
+
+        // Toggle gravedad ON/OFF (20%)
+        accumulated_weight += DEMO_LITE_WEIGHT_GRAVITY_TOGGLE;
+        if (random_value < accumulated_weight) {
+            toggleGravityOnOff();
+            return;
+        }
+
+        // Activar figura 3D (25%)
+        accumulated_weight += DEMO_LITE_WEIGHT_SHAPE;
+        if (random_value < accumulated_weight) {
+            ShapeType shapes[] = {ShapeType::SPHERE, ShapeType::WAVE_GRID, ShapeType::HELIX,
+                                 ShapeType::TORUS, ShapeType::CUBE, ShapeType::CYLINDER,
+                                 ShapeType::ICOSAHEDRON, ShapeType::ATOM};
+            int shape_index = rand() % 8;
+            activateShape(shapes[shape_index]);
+            return;
+        }
+
+        // Toggle física ↔ figura (20%)
+        accumulated_weight += DEMO_LITE_WEIGHT_TOGGLE_PHYSICS;
+        if (random_value < accumulated_weight) {
+            toggleShapeMode(false);  // NO forzar gravedad al salir
+            return;
+        }
+
+        // Aplicar impulso (10%)
+        accumulated_weight += DEMO_LITE_WEIGHT_IMPULSE;
+        if (random_value < accumulated_weight) {
+            pushBallsAwayFromGravity();
+            return;
+        }
+
+    } else {
+        // DEMO COMPLETO: Todas las acciones
+        TOTAL_WEIGHT = DEMO_WEIGHT_GRAVITY_DIR + DEMO_WEIGHT_GRAVITY_TOGGLE + DEMO_WEIGHT_SHAPE
+                     + DEMO_WEIGHT_TOGGLE_PHYSICS + DEMO_WEIGHT_REGENERATE_SHAPE + DEMO_WEIGHT_THEME
+                     + DEMO_WEIGHT_SCENARIO + DEMO_WEIGHT_IMPULSE + DEMO_WEIGHT_DEPTH_ZOOM
+                     + DEMO_WEIGHT_SHAPE_SCALE + DEMO_WEIGHT_SPRITE;
+        random_value = rand() % TOTAL_WEIGHT;
+
+        // Cambiar dirección gravedad (10%)
+        accumulated_weight += DEMO_WEIGHT_GRAVITY_DIR;
+        if (random_value < accumulated_weight) {
+            GravityDirection new_direction = static_cast<GravityDirection>(rand() % 4);
+            changeGravityDirection(new_direction);
+            return;
+        }
+
+        // Toggle gravedad ON/OFF (8%)
+        accumulated_weight += DEMO_WEIGHT_GRAVITY_TOGGLE;
+        if (random_value < accumulated_weight) {
+            toggleGravityOnOff();
+            return;
+        }
+
+        // Activar figura 3D (20%)
+        accumulated_weight += DEMO_WEIGHT_SHAPE;
+        if (random_value < accumulated_weight) {
+            ShapeType shapes[] = {ShapeType::SPHERE, ShapeType::WAVE_GRID, ShapeType::HELIX,
+                                 ShapeType::TORUS, ShapeType::CUBE, ShapeType::CYLINDER,
+                                 ShapeType::ICOSAHEDRON, ShapeType::ATOM};
+            int shape_index = rand() % 8;
+            activateShape(shapes[shape_index]);
+            return;
+        }
+
+        // Toggle física ↔ figura (12%)
+        accumulated_weight += DEMO_WEIGHT_TOGGLE_PHYSICS;
+        if (random_value < accumulated_weight) {
+            toggleShapeMode(false);  // NO forzar gravedad al salir
+            return;
+        }
+
+        // Re-generar misma figura (8%)
+        accumulated_weight += DEMO_WEIGHT_REGENERATE_SHAPE;
+        if (random_value < accumulated_weight) {
+            if (current_mode_ == SimulationMode::SHAPE && active_shape_) {
+                generateShape();  // Re-generar sin cambiar tipo
+            }
+            return;
+        }
+
+        // Cambiar tema (15%)
+        accumulated_weight += DEMO_WEIGHT_THEME;
+        if (random_value < accumulated_weight) {
+            ColorTheme new_theme = static_cast<ColorTheme>(rand() % 6);
+            startThemeTransition(new_theme);
+            return;
+        }
+
+        // Cambiar escenario (10%) - EXCLUIR índices 0, 6, 7 (1, 50K, 100K pelotas)
+        accumulated_weight += DEMO_WEIGHT_SCENARIO;
+        if (random_value < accumulated_weight) {
+            // Escenarios válidos: índices 1, 2, 3, 4, 5 (10, 100, 500, 1000, 10000 pelotas)
+            int valid_scenarios[] = {1, 2, 3, 4, 5};
+            scenario_ = valid_scenarios[rand() % 5];
+            initBalls(scenario_);
+            return;
+        }
+
+        // Aplicar impulso (10%)
+        accumulated_weight += DEMO_WEIGHT_IMPULSE;
+        if (random_value < accumulated_weight) {
+            pushBallsAwayFromGravity();
+            return;
+        }
+
+        // Toggle profundidad (3%)
+        accumulated_weight += DEMO_WEIGHT_DEPTH_ZOOM;
+        if (random_value < accumulated_weight) {
+            if (current_mode_ == SimulationMode::SHAPE) {
+                depth_zoom_enabled_ = !depth_zoom_enabled_;
+            }
+            return;
+        }
+
+        // Cambiar escala de figura (2%)
+        accumulated_weight += DEMO_WEIGHT_SHAPE_SCALE;
+        if (random_value < accumulated_weight) {
+            if (current_mode_ == SimulationMode::SHAPE) {
+                int scale_action = rand() % 3;
+                if (scale_action == 0) {
+                    shape_scale_factor_ += SHAPE_SCALE_STEP;
+                } else if (scale_action == 1) {
+                    shape_scale_factor_ -= SHAPE_SCALE_STEP;
+                } else {
+                    shape_scale_factor_ = SHAPE_SCALE_DEFAULT;
+                }
+                clampShapeScale();
+                generateShape();
+            }
+            return;
+        }
+
+        // Cambiar sprite (2%)
+        accumulated_weight += DEMO_WEIGHT_SPRITE;
+        if (random_value < accumulated_weight) {
+            switchTexture();
+            return;
+        }
+    }
+}
+
+// Randomizar todo al iniciar modo DEMO
+void Engine::randomizeOnDemoStart(bool is_lite) {
+    if (is_lite) {
+        // DEMO LITE: Solo randomizar física/figura + gravedad
+        // Elegir aleatoriamente entre modo física o figura
+        if (rand() % 2 == 0) {
+            // Modo física
+            if (current_mode_ == SimulationMode::SHAPE) {
+                toggleShapeMode(false);  // Salir a física sin forzar gravedad
+            }
+        } else {
+            // Modo figura: elegir figura aleatoria
+            ShapeType shapes[] = {ShapeType::SPHERE, ShapeType::WAVE_GRID, ShapeType::HELIX,
+                                 ShapeType::TORUS, ShapeType::CUBE, ShapeType::CYLINDER,
+                                 ShapeType::ICOSAHEDRON, ShapeType::ATOM};
+            activateShape(shapes[rand() % 8]);
+        }
+
+        // Randomizar gravedad: dirección + ON/OFF
         GravityDirection new_direction = static_cast<GravityDirection>(rand() % 4);
         changeGravityDirection(new_direction);
-        return;
-    }
-
-    // Acción: Activar figura 3D (25%)
-    accumulated_weight += DEMO_WEIGHT_SHAPE;
-    if (random_value < accumulated_weight) {
-        // Elegir figura aleatoria (SPHERE a ATOM = 8 figuras)
-        ShapeType shapes[] = {ShapeType::SPHERE, ShapeType::WAVE_GRID, ShapeType::HELIX,
-                             ShapeType::TORUS, ShapeType::CUBE, ShapeType::CYLINDER,
-                             ShapeType::ICOSAHEDRON, ShapeType::ATOM};
-        int shape_index = rand() % 8;
-        activateShape(shapes[shape_index]);
-        return;
-    }
-
-    // Acción: Cambiar tema (20%)
-    accumulated_weight += DEMO_WEIGHT_THEME;
-    if (random_value < accumulated_weight) {
-        ColorTheme new_theme = static_cast<ColorTheme>(rand() % 6);  // 6 temas disponibles
-        startThemeTransition(new_theme);
-        return;
-    }
-
-    // Acción: Cambiar escenario/número de pelotas (15%)
-    accumulated_weight += DEMO_WEIGHT_SCENARIO;
-    if (random_value < accumulated_weight) {
-        scenario_ = rand() % test_.size();
-        initBalls(scenario_);
-        return;
-    }
-
-    // Acción: Aplicar impulso (10%)
-    accumulated_weight += DEMO_WEIGHT_IMPULSE;
-    if (random_value < accumulated_weight) {
-        pushBallsAwayFromGravity();
-        return;
-    }
-
-    // Acción: Toggle profundidad (5%)
-    accumulated_weight += DEMO_WEIGHT_DEPTH_ZOOM;
-    if (random_value < accumulated_weight) {
-        if (current_mode_ == SimulationMode::SHAPE) {
-            depth_zoom_enabled_ = !depth_zoom_enabled_;
+        if (rand() % 2 == 0) {
+            toggleGravityOnOff();  // 50% probabilidad de desactivar gravedad
         }
-        return;
-    }
 
-    // Acción: Cambiar escala de figura (5%)
-    accumulated_weight += DEMO_WEIGHT_SHAPE_SCALE;
-    if (random_value < accumulated_weight) {
-        if (current_mode_ == SimulationMode::SHAPE) {
-            // Aleatorio: +1, -1, o reset
-            int scale_action = rand() % 3;
-            if (scale_action == 0) {
-                shape_scale_factor_ += SHAPE_SCALE_STEP;
-            } else if (scale_action == 1) {
-                shape_scale_factor_ -= SHAPE_SCALE_STEP;
-            } else {
-                shape_scale_factor_ = SHAPE_SCALE_DEFAULT;
+    } else {
+        // DEMO COMPLETO: Randomizar TODO
+
+        // 1. Escenario (excluir índices 0, 6, 7)
+        int valid_scenarios[] = {1, 2, 3, 4, 5};
+        scenario_ = valid_scenarios[rand() % 5];
+        initBalls(scenario_);
+
+        // 2. Tema
+        ColorTheme new_theme = static_cast<ColorTheme>(rand() % 6);
+        startThemeTransition(new_theme);
+
+        // 3. Sprite
+        if (rand() % 2 == 0) {
+            switchTexture();
+        }
+
+        // 4. Física o Figura
+        if (rand() % 2 == 0) {
+            // Modo física
+            if (current_mode_ == SimulationMode::SHAPE) {
+                toggleShapeMode(false);
             }
+        } else {
+            // Modo figura: elegir figura aleatoria
+            ShapeType shapes[] = {ShapeType::SPHERE, ShapeType::WAVE_GRID, ShapeType::HELIX,
+                                 ShapeType::TORUS, ShapeType::CUBE, ShapeType::CYLINDER,
+                                 ShapeType::ICOSAHEDRON, ShapeType::ATOM};
+            activateShape(shapes[rand() % 8]);
+
+            // 5. Profundidad (solo si estamos en figura)
+            if (rand() % 2 == 0) {
+                depth_zoom_enabled_ = !depth_zoom_enabled_;
+            }
+
+            // 6. Escala de figura (aleatoria entre 0.5x y 2.0x)
+            shape_scale_factor_ = 0.5f + (rand() % 1500) / 1000.0f;
             clampShapeScale();
             generateShape();
         }
-        return;
-    }
 
-    // Acción: Cambiar sprite (5%)
-    accumulated_weight += DEMO_WEIGHT_SPRITE;
-    if (random_value < accumulated_weight) {
-        switchTexture();
-        return;
+        // 7. Gravedad: dirección + ON/OFF
+        GravityDirection new_direction = static_cast<GravityDirection>(rand() % 4);
+        changeGravityDirection(new_direction);
+        if (rand() % 3 == 0) {  // 33% probabilidad de desactivar gravedad
+            toggleGravityOnOff();
+        }
+    }
+}
+
+// Toggle gravedad ON/OFF para todas las pelotas
+void Engine::toggleGravityOnOff() {
+    // Alternar entre activar/desactivar gravedad
+    bool first_ball_gravity_enabled = (balls_.empty() || balls_[0]->getGravityForce() > 0.0f);
+
+    if (first_ball_gravity_enabled) {
+        // Desactivar gravedad
+        forceBallsGravityOff();
+    } else {
+        // Activar gravedad
+        forceBallsGravityOn();
     }
 }
 
@@ -1372,12 +1585,14 @@ void Engine::switchTexture() {
     // Ajustar posiciones según el cambio de tamaño
     updateBallSizes(old_size, new_size);
 
-    // Mostrar texto informativo
-    std::string texture_name = (current_texture_index_ == 0) ? "NORMAL" : "SMALL";
-    text_ = "SPRITE: " + texture_name;
-    text_pos_ = (current_screen_width_ - static_cast<int>(text_.length() * 8)) / 2;
-    show_text_ = true;
-    text_init_time_ = SDL_GetTicks();
+    // Mostrar texto informativo (solo si NO estamos en modo demo)
+    if (!demo_mode_enabled_ && !demo_lite_enabled_) {
+        std::string texture_name = (current_texture_index_ == 0) ? "NORMAL" : "SMALL";
+        text_ = "SPRITE: " + texture_name;
+        text_pos_ = (current_screen_width_ - static_cast<int>(text_.length() * 8)) / 2;
+        show_text_ = true;
+        text_init_time_ = SDL_GetTicks();
+    }
 }
 
 // Sistema de Figuras 3D - Alternar entre modo física y última figura (Toggle con tecla F)
@@ -1400,12 +1615,14 @@ void Engine::toggleShapeMode(bool force_gravity_on_exit) {
             forceBallsGravityOn();
         }
 
-        // Mostrar texto informativo
-        text_ = "MODO FISICA";
-        int text_width = static_cast<int>(text_.length() * 8);
-        text_pos_ = (current_screen_width_ - text_width) / 2;
-        text_init_time_ = SDL_GetTicks();
-        show_text_ = true;
+        // Mostrar texto informativo (solo si NO estamos en modo demo)
+        if (!demo_mode_enabled_ && !demo_lite_enabled_) {
+            text_ = "MODO FISICA";
+            int text_width = static_cast<int>(text_.length() * 8);
+            text_pos_ = (current_screen_width_ - text_width) / 2;
+            text_init_time_ = SDL_GetTicks();
+            show_text_ = true;
+        }
     }
 }
 
@@ -1460,8 +1677,8 @@ void Engine::activateShape(ShapeType type) {
         ball->enableRotoBallAttraction(true);
     }
 
-    // Mostrar texto informativo con nombre de figura
-    if (active_shape_) {
+    // Mostrar texto informativo con nombre de figura (solo si NO estamos en modo demo)
+    if (active_shape_ && !demo_mode_enabled_ && !demo_lite_enabled_) {
         text_ = std::string("MODO ") + active_shape_->getName();
         int text_width = static_cast<int>(text_.length() * 8);
         text_pos_ = (current_screen_width_ - text_width) / 2;
diff --git a/source/engine.h b/source/engine.h
index b3dc353..6315f3e 100644
--- a/source/engine.h
+++ b/source/engine.h
@@ -96,7 +96,8 @@ private:
     bool depth_zoom_enabled_ = true;                       // Zoom por profundidad Z activado
 
     // Sistema de Modo DEMO (auto-play)
-    bool demo_mode_enabled_ = false;                       // ¿Está activo el modo demo?
+    bool demo_mode_enabled_ = false;                       // ¿Está activo el modo demo completo?
+    bool demo_lite_enabled_ = false;                       // ¿Está activo el modo demo lite?
     float demo_timer_ = 0.0f;                              // Contador de tiempo para próxima acción
     float demo_next_action_time_ = 0.0f;                   // Tiempo aleatorio hasta próxima acción (segundos)
 
@@ -128,7 +129,9 @@ private:
 
     // Sistema de Modo DEMO
     void updateDemoMode();
-    void performDemoAction();
+    void performDemoAction(bool is_lite);
+    void randomizeOnDemoStart(bool is_lite);
+    void toggleGravityOnOff();
 
     // Sistema de transiciones LERP
     float lerp(float a, float b, float t) const { return a + (b - a) * t; }