TO SQUASH: Fixed issues.

Assets/Scripts/Game/Spawners/MultiplierSpawner.cs

@@ -6,6 +6,8 @@ public class MultiplierSpawner : Spawner
 
     public SpriteRenderer gameBoardSpriteRenderer;
 
+    public WorldFiller worldFiller;
+
     private Bounds multiplierBounds;
 
     private Bounds gameBoardBounds;
@@ -36,6 +38,7 @@ public class MultiplierSpawner : Spawner
             spawnTimer = 0f;
             if (Random.value < spawnProbability)
             {
+                spawnPosition = worldFiller.GetRandomPositionInFreeAreas(multiplierBounds);
                 GameObject multiplier = Instantiate(multiplierPrefab, spawnPosition, Quaternion.identity);
                 isActive = false;
             }
@@ -46,15 +49,5 @@ public class MultiplierSpawner : Spawner
     {
         isActive = true;
         spawnTimer = 0f;
-        spawnPosition = new Vector2(
-            Random.Range(
-                gameBoardBounds.min.x + multiplierBounds.extents.x, 
-                gameBoardBounds.max.x - multiplierBounds.extents.x
-            ),
-            Random.Range(
-                gameBoardBounds.min.y + multiplierBounds.extents.y, 
-                gameBoardBounds.max.y - multiplierBounds.extents.y
-            )
-        );
     }
 }

Assets/Scripts/Game/Spawners/Spawner.cs

@@ -13,4 +13,20 @@ public abstract class Spawner : MonoBehaviour
     {
         isSpawning = true;
     }
+
+    protected Vector2 GetRandomSpawnPosition(Bounds bounds)
+    {
+        var spawnPosition = new Vector2(
+            Random.Range(
+                bounds.min.x + bounds.extents.x, 
+                bounds.max.x - bounds.extents.x
+            ),
+            Random.Range(
+                bounds.min.y + bounds.extents.y, 
+                bounds.max.y - bounds.extents.y
+            )
+        );
+        
+        return spawnPosition;
+    }
 }