diff --git a/database/seeders/DatabaseSeeder.php b/database/seeders/DatabaseSeeder.php
index 0ad7c61..3cb7308 100644
--- a/database/seeders/DatabaseSeeder.php
+++ b/database/seeders/DatabaseSeeder.php
@@ -17,6 +17,7 @@ class DatabaseSeeder extends Seeder
     {
 
         $this->call([
+            LevelSeeder::class,
             BordeauxHuntsSeeder::class,
         ]);
     }
diff --git a/database/seeders/LevelSeeder.php b/database/seeders/LevelSeeder.php
new file mode 100644
index 0000000..04b9d2b
--- /dev/null
+++ b/database/seeders/LevelSeeder.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Seeder;
+use App\Models\Level;
+
+class LevelSeeder extends Seeder
+{
+    public function run(): void
+    {
+        $tiers = [
+            'Bronze',
+            'Argent',
+            'Or',
+            'Platine',
+            'Diamant',
+            'Maître',
+            'Grand Maître',
+            'Légende',
+        ];
+
+        $levelsPerTier = 10;
+        $baseXp = 50;
+        $scalingFactor = 20;
+
+        for ($level = 1; $level <= 100; $level++) {
+
+            // Déterminer le tier
+            $tierIndex = intdiv($level - 1, $levelsPerTier);
+            $tierName = $tiers[$tierIndex] ?? 'Légende';
+
+            // Rang dans le tier (I, II, III…)
+            $rankInTier = (($level - 1) % $levelsPerTier) + 1;
+            $romanRank = $this->toRoman($rankInTier);
+
+            // XP non linéaire
+            $xpThreshold = $baseXp + ($level * $level * $scalingFactor);
+
+            Level::updateOrCreate(
+                ['level_position' => $level],
+                [
+                    'xpThreshold' => $xpThreshold,
+                    'label' => "{$tierName} {$romanRank}",
+                ]
+            );
+        }
+    }
+
+    private function toRoman(int $number): string
+    {
+        $map = [
+            'X' => 10,
+            'IX' => 9,
+            'V' => 5,
+            'IV' => 4,
+            'I' => 1,
+        ];
+
+        $result = '';
+        foreach ($map as $roman => $value) {
+            while ($number >= $value) {
+                $result .= $roman;
+                $number -= $value;
+            }
+        }
+
+        return $result;
+    }
+}