Sound has been updated. As a result snares can be collected from a bit further away as it is now harder to tell when you're about to step on it. A few string updates. Mountain terrain added. May require rope for traversal.

src/time_system.nvgt

@@ -17,7 +17,7 @@ bool crossfade_active = false;
 bool crossfade_to_night = false; // true = fading to night, false = fading to day
 timer crossfade_timer;
 const int CROSSFADE_DURATION = 60000; // 1 minute (1 game hour)
-const float CROSSFADE_MIN_VOLUME = -40.0; // dB, effectively silent but not extreme
+const float CROSSFADE_MIN_VOLUME = -25.0; // dB, keep overlap audible during crossfade
 const float CROSSFADE_MAX_VOLUME = 0.0; // dB, full volume
 
 // Expansion and invasion tracking
@@ -53,6 +53,16 @@ void expand_area() {
     // Play invasion sound
     p.play_stationary("sounds/enemies/invasion.ogg", false);
 
+    // 25% chance for mountain, 75% for regular expansion
+    int type_roll = random(0, 3);
+    if (type_roll == 0) {
+        expand_mountain();
+    } else {
+        expand_regular_area();
+    }
+}
+
+void expand_regular_area() {
     // Calculate new area
     int new_start = MAP_SIZE;
     int new_end = MAP_SIZE + EXPANSION_SIZE - 1;
@@ -103,6 +113,30 @@ void expand_area() {
     notify("The area has expanded! New territory discovered to the east.");
 }
 
+void expand_mountain() {
+    int new_start = MAP_SIZE;
+    int size = MOUNTAIN_SIZE;
+    int new_end = new_start + size - 1;
+
+    if (expanded_area_start == -1) {
+        expanded_area_start = new_start;
+    }
+    expanded_area_end = new_end;
+    MAP_SIZE += size;
+
+    // Generate mountain range
+    MountainRange@ mountain = MountainRange(new_start, size);
+    world_mountains.insert_last(mountain);
+
+    // Fill terrain types array for compatibility with save system
+    for (int i = 0; i < size; i++) {
+        expanded_terrain_types.insert_last("mountain:" + mountain.terrain_types[i]);
+    }
+
+    area_expanded_today = true;
+    notify("A mountain range has been discovered to the east!");
+}
+
 void start_invasion() {
     expand_area();
     invasion_active = true;
@@ -139,26 +173,34 @@ void schedule_invasion() {
 }
 
 void check_scheduled_invasion() {
-    if (invasion_active || invasion_triggered_today) return;
-    if (invasion_scheduled_hour == -1) return;
-    if (current_hour == invasion_scheduled_hour) {
-        invasion_scheduled_hour = -1;
-        invasion_triggered_today = true;
-        start_invasion();
-    } else if (current_hour > 11) {
-        invasion_scheduled_hour = -1;
+    if (invasion_active) return;
+
+    // Check scheduled invasion regardless of triggered flag (fixes bug where flag was set early in old saves)
+    if (invasion_scheduled_hour != -1) {
+        if (current_hour == invasion_scheduled_hour) {
+            invasion_scheduled_hour = -1;
+            invasion_triggered_today = true;
+            start_invasion();
+        } else if (current_hour > 11) {
+            invasion_scheduled_hour = -1;
+        }
+        return;
     }
+
+    if (invasion_triggered_today) return;
 }
 
 void attempt_daily_invasion() {
     if (current_day < 2) return;
     if (invasion_triggered_today || invasion_active) return;
+    if (invasion_roll_done_today) return;
     if (current_hour < 6 || current_hour > 12) return;
 
+    invasion_roll_done_today = true;
+
     int roll = random(1, 100);
     if (roll > invasion_chance) return;
 
-    invasion_triggered_today = true;
     schedule_invasion();
     check_scheduled_invasion();
 }
@@ -250,24 +292,30 @@ void attempt_blessing() {
     favor -= 1.0;
     if (favor < 0) favor = 0;
 
+    string[] god_names = {
+        "Odin's", "Thor's", "Freyja's", "Loki's", "Tyr's", "Baldur's",
+        "Frigg's", "Heimdall's", "Hel's", "Fenrir's", "Freyr's", "The gods'"
+    };
+    string god_name = god_names[random(0, god_names.length() - 1)];
+
     if (choice == 0) {
         int before = player_health;
         player_health += BLESSING_HEAL_AMOUNT;
         if (player_health > max_health) player_health = max_health;
         int healed = player_health - before;
         string bonus = (healed > 0) ? "You feel restored. +" + healed + " health." : "You feel restored.";
-        notify("The gods' favor shines upon you. " + bonus);
+        notify(god_name + " favor shines upon you. " + bonus);
     } else if (choice == 1) {
         blessing_speed_active = true;
         blessing_speed_timer.restart();
         update_max_health_from_equipment();
-        notify("The gods' favor shines upon you. You feel swift for a while.");
+        notify(god_name + " favor shines upon you. You feel swift for a while.");
     } else if (choice == 2) {
         int gained = add_barricade_health(BLESSING_BARRICADE_REPAIR);
         string bonus = (gained > 0)
             ? "A divine force repairs the barricade. +" + gained + " health."
             : "A divine force surrounds the barricade.";
-        notify("The gods' favor shines upon you. " + bonus);
+        notify(god_name + " favor shines upon you. " + bonus);
     }
 }
 
@@ -393,10 +441,11 @@ void update_crossfade() {
     float progress = float(crossfade_timer.elapsed) / float(CROSSFADE_DURATION);
     if (progress > 1.0) progress = 1.0;
 
-    // Volume interpolation: fade out goes 0 -> -40, fade in goes -40 -> 0
-    float volume_range = CROSSFADE_MAX_VOLUME - CROSSFADE_MIN_VOLUME; // 40 dB range
-    float fade_out_vol = CROSSFADE_MAX_VOLUME - (volume_range * progress); // 0 -> -40
-    float fade_in_vol = CROSSFADE_MIN_VOLUME + (volume_range * progress); // -40 -> 0
+    // Volume interpolation: use a slow-start curve to make fade-outs more gradual
+    float volume_range = CROSSFADE_MAX_VOLUME - CROSSFADE_MIN_VOLUME; // dB range
+    float eased_progress = progress * progress;
+    float fade_out_vol = CROSSFADE_MAX_VOLUME - (volume_range * eased_progress); // 0 -> min
+    float fade_in_vol = CROSSFADE_MIN_VOLUME + (volume_range * eased_progress); // min -> 0
 
     if (crossfade_to_night) {
         // Fading day out, night in