diff --git a/Common/Data/Excel/GachaExcel.cs b/Common/Data/Excel/GachaExcel.cs
new file mode 100644
index 0000000..cb19bba
--- /dev/null
+++ b/Common/Data/Excel/GachaExcel.cs
@@ -0,0 +1,44 @@
+using MikuSB.Util;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace MikuSB.Data.Excel;
+
+[ResourceEntity("gacha/gacha.json")]
+public class GachaExcel : ExcelResource
+{
+    public uint ID { get; set; }
+    public List<string>? Pool { get; set; }
+    public uint Probability { get; set; }
+    public uint ProbabilityTen { get; set; }
+    public JToken? ProtectNum { get; set; }
+    public JToken? UpNum { get; set; }
+    public uint? ProtectTag { get; set; }
+    public uint? ProtectType { get; set; }
+    public JToken? ProtectCount { get; set; }
+
+    public override uint GetId() => ID;
+    public override void Loaded() => GameData.GachaData[ID] = this;
+
+    public override void AfterAllDone()
+    {
+        foreach (var poolName in Pool ?? [])
+        {
+            if (GameData.GachaPoolData.ContainsKey(poolName)) continue;
+            var path = ConfigManager.Config.Path.ResourcePath + "/gacha/pool/" + poolName + ".json";
+            if (!File.Exists(path)) continue;
+            var json = File.ReadAllText(path);
+            var items = JsonConvert.DeserializeObject<List<GachaPoolItem>>(json) ?? [];
+            GameData.GachaPoolData[poolName] = items;
+        }
+    }
+}
+
+public class GachaPoolItem
+{
+    public int ID { get; set; }
+    public int Rarity { get; set; }
+    public List<uint> GDPL { get; set; } = [];
+    public int Weight { get; set; }
+    public int? UPTag { get; set; }
+}
diff --git a/Common/Data/Excel/GachaProbabilityExcel.cs b/Common/Data/Excel/GachaProbabilityExcel.cs
new file mode 100644
index 0000000..d797989
--- /dev/null
+++ b/Common/Data/Excel/GachaProbabilityExcel.cs
@@ -0,0 +1,18 @@
+namespace MikuSB.Data.Excel;
+
+[ResourceEntity("gacha/probability.json")]
+public class GachaProbabilityExcel : ExcelResource
+{
+    public uint ID { get; set; }
+    public int Rarity1 { get; set; }
+    public int Rarity2 { get; set; }
+    public int Rarity3 { get; set; }
+    public int Rarity4 { get; set; }
+    public int Rarity5 { get; set; }
+    public int Rarity6 { get; set; }
+
+    public int[] Weights => [Rarity1, Rarity2, Rarity3, Rarity4, Rarity5, Rarity6];
+
+    public override uint GetId() => ID;
+    public override void Loaded() => GameData.GachaProbabilityData[ID] = this;
+}
diff --git a/Common/Data/GameData.cs b/Common/Data/GameData.cs
index 5a665c8..1b785a9 100644
--- a/Common/Data/GameData.cs
+++ b/Common/Data/GameData.cs
@@ -35,6 +35,9 @@ public static class GameData
     public static Dictionary<uint, GuideExcel> GuideData { get; private set; } = [];
     public static Dictionary<uint, DormGiftExcel> DormGiftData { get; private set; } = [];
     public static Dictionary<uint, HouseFurniturePosExcel> HouseFurniturePosData { get; private set; } = [];
+    public static Dictionary<uint, GachaExcel> GachaData { get; private set; } = [];
+    public static Dictionary<uint, GachaProbabilityExcel> GachaProbabilityData { get; private set; } = [];
+    public static Dictionary<string, List<GachaPoolItem>> GachaPoolData { get; private set; } = [];
 }
 
 public static class GameResourceTemplateId
diff --git a/GameServer/Server/CallGS/Handlers/Gacha/Gacha_Launch.cs b/GameServer/Server/CallGS/Handlers/Gacha/Gacha_Launch.cs
new file mode 100644
index 0000000..dc1399e
--- /dev/null
+++ b/GameServer/Server/CallGS/Handlers/Gacha/Gacha_Launch.cs
@@ -0,0 +1,449 @@
+using MikuSB.Data;
+using MikuSB.Data.Excel;
+using MikuSB.Database;
+using MikuSB.Database.Player;
+using MikuSB.Enums.Item;
+using MikuSB.GameServer.Game.Player;
+using MikuSB.Proto;
+using Newtonsoft.Json.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace MikuSB.GameServer.Server.CallGS.Handlers.Gacha;
+
+[CallGSApi("Gacha_Launch")]
+public class Gacha_Launch : ICallGSHandler
+{
+    private const uint GachaGid = 5;
+    private const uint GachaSgid = 42;
+    private const uint SidTotalTime = 1;
+    private const uint SidDailyTotalTime = 2;
+    private const uint Interval = 10;
+    private const uint SidTimeInheritStart = 20000;
+    private const uint SidTimeNotInheritStart = 10;
+    private const uint SidAddTimeItem = 1;
+    private const uint SidAddTimeProb = 2;
+    private const uint SidAddProtectType = 3;
+    private const uint SidAddTotalTime = 7;
+    private static readonly Random Rng = new();
+
+    public async Task Handle(Connection connection, string param, ushort seqNo)
+    {
+        var player = connection.Player!;
+        var req = JsonSerializer.Deserialize<GachaLaunchParam>(param);
+        if (req == null || req.NId == 0 || req.NTime is not (1 or 10))
+        {
+            await CallGSRouter.SendScript(connection, "Gacha_Launch", "{\"sErr\":\"error.BadParam\"}");
+            return;
+        }
+
+        if (!GameData.GachaData.TryGetValue((uint)req.NId, out var gachaCfg))
+        {
+            await CallGSRouter.SendScript(connection, "Gacha_Launch", "{\"sErr\":\"error.BadParam\"}");
+            return;
+        }
+
+        var poolNames = (gachaCfg.Pool ?? [])
+            .Where(GameData.GachaPoolData.ContainsKey)
+            .ToList();
+        var allPoolItems = poolNames
+            .SelectMany(p => GameData.GachaPoolData[p])
+            .ToList();
+
+        if (allPoolItems.Count == 0 || !GameData.GachaProbabilityData.TryGetValue(gachaCfg.Probability, out var baseProbCfg))
+        {
+            await CallGSRouter.SendScript(connection, "Gacha_Launch", "{\"sErr\":\"error.BadParam\"}");
+            return;
+        }
+
+        var pityState = LoadPityState(player, gachaCfg);
+        var config = BuildRuntimeConfig(gachaCfg, poolNames);
+        var awards = new List<List<uint>>();
+        var tbNew = new List<int>();
+        var tbTrigger = new List<bool>();
+        var syncItems = new List<Item>();
+        var sync = new NtfSyncPlayer();
+
+        for (int i = 0; i < req.NTime; i++)
+        {
+            var forceTopUp = config.UpTarget != null && pityState.ProtectType == 2;
+            var hitHardPity = config.ProtectThreshold > 0 && pityState.ItemCount + 1 >= config.ProtectThreshold;
+            var useTenGuarantee = gachaCfg.ProbabilityTen != 0
+                && pityState.TenCount + 1 >= 10
+                && !HasGuaranteedTenRarity(config, awards);
+
+            GachaProbabilityExcel probCfg = baseProbCfg;
+            if (useTenGuarantee && GameData.GachaProbabilityData.TryGetValue(gachaCfg.ProbabilityTen, out var tenProbCfg))
+                probCfg = tenProbCfg;
+
+            GachaPoolItem? item;
+            bool trigger = false;
+
+            if (hitHardPity)
+            {
+                item = PickGuaranteedItem(gachaCfg, config, preferUp: forceTopUp);
+                trigger = item != null;
+            }
+            else
+            {
+                var rarity = RollRarity(probCfg);
+                item = forceTopUp && config.UpTarget != null && rarity >= config.TopRarity
+                    ? PickGuaranteedItem(gachaCfg, config, preferUp: true)
+                    : PickItem(allPoolItems, rarity);
+                trigger = forceTopUp && item != null && config.UpTarget != null && item.Rarity == config.UpTarget.Rarity;
+            }
+
+            if (item == null || item.GDPL.Count < 4)
+            {
+                tbTrigger.Add(false);
+                continue;
+            }
+
+            var g = item.GDPL[0];
+            var d = item.GDPL[1];
+            var p = item.GDPL[2];
+            var l = item.GDPL[3];
+
+            awards.Add([g, d, p, l]);
+            tbTrigger.Add(trigger);
+
+            UpdatePityState(pityState, config, item);
+
+            var itemType = (ItemTypeEnum)g;
+            switch (itemType)
+            {
+                case ItemTypeEnum.TYPE_CARD:
+                {
+                    var alreadyOwned = player.CharacterManager.GetCharacterGDPL(itemType, (int)d, (int)p) != null;
+                    if (!alreadyOwned)
+                    {
+                        var charInfo = await player.CharacterManager.AddCharacter(itemType, d, p, sendPacket: false);
+                        if (charInfo != null)
+                        {
+                            syncItems.Add(charInfo.ToProto());
+                            tbNew.Add(awards.Count);
+                        }
+                    }
+                    break;
+                }
+                case ItemTypeEnum.TYPE_WEAPON:
+                {
+                    var weaponInfo = await player.InventoryManager.AddWeaponItem(itemType, d, p, l, sendPacket: false);
+                    if (weaponInfo != null) syncItems.Add(weaponInfo.ToProto());
+                    break;
+                }
+                case ItemTypeEnum.TYPE_SUPPORT:
+                {
+                    var cardInfo = await player.InventoryManager.AddSupportCardItem(d, p, l, sendPacket: false);
+                    if (cardInfo != null) syncItems.Add(cardInfo.ToProto());
+                    break;
+                }
+            }
+        }
+
+        if (awards.Count == 0)
+        {
+            await CallGSRouter.SendScript(connection, "Gacha_Launch", "{\"sErr\":\"error.BadParam\"}");
+            return;
+        }
+
+        SavePityState(player, gachaCfg, pityState, awards.Count, sync);
+        DatabaseHelper.SaveDatabaseType(player.Data);
+        DatabaseHelper.SaveDatabaseType(player.InventoryManager.InventoryData);
+        DatabaseHelper.SaveDatabaseType(player.CharacterManager.CharacterData);
+
+        sync.Items.AddRange(syncItems);
+
+        var rsp = BuildResponse(req.NId, awards, tbNew, tbTrigger);
+        await CallGSRouter.SendScript(connection, "Gacha_Launch", rsp, sync);
+    }
+
+    private static bool HasGuaranteedTenRarity(GachaRuntimeConfig config, List<List<uint>> awards)
+    {
+        if (awards.Count == 0)
+            return false;
+
+        int windowStart = awards.Count >= 9 ? awards.Count - 9 : 0;
+        for (int i = windowStart; i < awards.Count; i++)
+        {
+            var award = awards[i];
+            if (award.Count < 4)
+                continue;
+
+            var template = FindPoolItemByGdpl(config.AllPoolItems, award);
+            if (template != null && template.Rarity >= config.TenGuaranteeRarity)
+                return true;
+        }
+
+        return false;
+    }
+
+    private static GachaPoolItem? FindPoolItemByGdpl(List<GachaPoolItem> pool, List<uint> gdpl) =>
+        pool.FirstOrDefault(x =>
+            x.GDPL.Count >= 4 &&
+            x.GDPL[0] == gdpl[0] &&
+            x.GDPL[1] == gdpl[1] &&
+            x.GDPL[2] == gdpl[2] &&
+            x.GDPL[3] == gdpl[3]);
+
+    private static GachaRuntimeConfig BuildRuntimeConfig(GachaExcel gachaCfg, List<string> poolNames)
+    {
+        var allPoolItems = poolNames.SelectMany(name => GameData.GachaPoolData[name]).ToList();
+        var protectPools = ParsePoolRarities(gachaCfg.ProtectNum);
+        var upTarget = ParseSinglePoolRarity(gachaCfg.UpNum);
+        var topRarity = new[] { upTarget?.Rarity ?? 0 }.Concat(protectPools.Select(x => x.Rarity)).Max();
+        if (topRarity <= 0)
+            topRarity = allPoolItems.Count == 0 ? 0 : allPoolItems.Max(x => x.Rarity);
+
+        return new GachaRuntimeConfig
+        {
+            AllPoolItems = allPoolItems,
+            ProtectThreshold = ParseThreshold(gachaCfg.ProtectNum),
+            ProtectPools = protectPools,
+            UpTarget = upTarget,
+            TopRarity = topRarity,
+            TenGuaranteeRarity = 4
+        };
+    }
+
+    private static int ParseThreshold(JToken? token)
+    {
+        if (token is not JArray arr || arr.Count == 0)
+            return 0;
+
+        return arr[0]?.Value<int>() ?? 0;
+    }
+
+    private static List<PoolRarityRef> ParsePoolRarities(JToken? token)
+    {
+        var result = new List<PoolRarityRef>();
+        if (token is not JArray arr || arr.Count < 2 || arr[1] is not JArray entries)
+            return result;
+
+        foreach (var entry in entries.OfType<JArray>())
+        {
+            if (entry.Count < 2)
+                continue;
+
+            var poolName = entry[0]?.Value<string>();
+            var rarity = entry[1]?.Value<int>() ?? 0;
+            if (string.IsNullOrWhiteSpace(poolName) || rarity <= 0)
+                continue;
+
+            result.Add(new PoolRarityRef(poolName, rarity));
+        }
+
+        return result;
+    }
+
+    private static PoolRarityRef? ParseSinglePoolRarity(JToken? token)
+    {
+        if (token is not JArray arr || arr.Count < 2 || arr[1] is not JArray entry || entry.Count < 2)
+            return null;
+
+        var poolName = entry[0]?.Value<string>();
+        var rarity = entry[1]?.Value<int>() ?? 0;
+        return string.IsNullOrWhiteSpace(poolName) || rarity <= 0 ? null : new PoolRarityRef(poolName, rarity);
+    }
+
+    private static GachaPityState LoadPityState(PlayerInstance player, GachaExcel gachaCfg)
+    {
+        var baseSid = GetBaseSid(gachaCfg);
+        return new GachaPityState
+        {
+            ItemCount = (int)GetAttr(player, GachaGid, baseSid + SidAddTimeItem),
+            TenCount = (int)GetAttr(player, GachaGid, baseSid + SidAddTimeProb),
+            ProtectType = Math.Max(1, (int)GetAttr(player, GachaGid, baseSid + SidAddProtectType)),
+            PoolTotalTime = (int)GetAttr(player, GachaGid, baseSid + SidAddTotalTime)
+        };
+    }
+
+    private static void SavePityState(PlayerInstance player, GachaExcel gachaCfg, GachaPityState state, int drawCount, NtfSyncPlayer sync)
+    {
+        var baseSid = GetBaseSid(gachaCfg);
+
+        SetAttr(player, sync, GachaGid, SidTotalTime, GetAttr(player, GachaGid, SidTotalTime) + (uint)drawCount);
+        SetAttr(player, sync, GachaGid, SidDailyTotalTime, GetAttr(player, GachaGid, SidDailyTotalTime) + (uint)drawCount);
+        SetAttr(player, sync, GachaGid, baseSid + SidAddTimeItem, (uint)state.ItemCount);
+        SetAttr(player, sync, GachaGid, baseSid + SidAddTimeProb, (uint)state.TenCount);
+        SetAttr(player, sync, GachaGid, baseSid + SidAddProtectType, (uint)Math.Max(1, state.ProtectType));
+        SetAttr(player, sync, GachaGid, baseSid + SidAddTotalTime, (uint)(state.PoolTotalTime + drawCount));
+    }
+
+    private static uint GetBaseSid(GachaExcel gachaCfg)
+    {
+        if (gachaCfg.ProtectTag.HasValue)
+            return SidTimeInheritStart + (gachaCfg.ProtectTag.Value * Interval);
+
+        return SidTimeNotInheritStart + (gachaCfg.ID * Interval);
+    }
+
+    private static uint GetAttr(PlayerInstance player, uint gid, uint sid) =>
+        player.Data.Attrs.FirstOrDefault(x => x.Gid == gid && x.Sid == sid)?.Val ?? 0;
+
+    private static void SetAttr(PlayerInstance player, NtfSyncPlayer sync, uint gid, uint sid, uint value)
+    {
+        var attr = player.Data.Attrs.FirstOrDefault(x => x.Gid == gid && x.Sid == sid);
+        if (attr == null)
+        {
+            attr = new PlayerAttr { Gid = gid, Sid = sid };
+            player.Data.Attrs.Add(attr);
+        }
+
+        attr.Val = value;
+        sync.Custom[player.ToPackedAttrKey(gid, sid)] = value;
+        sync.Custom[player.ToShiftedAttrKey(gid, sid)] = value;
+    }
+
+    private static void UpdatePityState(GachaPityState state, GachaRuntimeConfig config, GachaPoolItem item)
+    {
+        if (item.Rarity >= config.TenGuaranteeRarity)
+            state.TenCount = 0;
+        else
+            state.TenCount++;
+
+        if (item.Rarity >= config.TopRarity)
+        {
+            state.ItemCount = 0;
+            if (config.UpTarget != null)
+                state.ProtectType = IsFromPool(item, config.UpTarget) ? 1 : 2;
+            else
+                state.ProtectType = 1;
+        }
+        else
+        {
+            state.ItemCount++;
+        }
+    }
+
+    private static bool IsFromPool(GachaPoolItem item, PoolRarityRef target) =>
+        item.Rarity == target.Rarity &&
+        GameData.GachaPoolData.TryGetValue(target.PoolName, out var pool) &&
+        pool.Any(x => x.ID == item.ID);
+
+    private static int RollRarity(GachaProbabilityExcel prob)
+    {
+        var weights = prob.Weights;
+        int total = weights.Sum();
+        int roll = Rng.Next(total);
+        int cumulative = 0;
+        for (int i = 0; i < weights.Length; i++)
+        {
+            cumulative += weights[i];
+            if (roll < cumulative)
+                return i + 1;
+        }
+
+        return 3;
+    }
+
+    private static GachaPoolItem? PickGuaranteedItem(GachaExcel gachaCfg, GachaRuntimeConfig config, bool preferUp)
+    {
+        if (preferUp && config.UpTarget != null)
+        {
+            var upItem = PickItemFromPool(config.UpTarget.PoolName, config.UpTarget.Rarity);
+            if (upItem != null)
+                return upItem;
+        }
+
+        foreach (var poolRef in config.ProtectPools)
+        {
+            var item = PickItemFromPool(poolRef.PoolName, poolRef.Rarity);
+            if (item != null)
+                return item;
+        }
+
+        return PickItem(config.AllPoolItems, config.TopRarity);
+    }
+
+    private static GachaPoolItem? PickItemFromPool(string poolName, int rarity)
+    {
+        if (!GameData.GachaPoolData.TryGetValue(poolName, out var pool))
+            return null;
+
+        return PickItem(pool, rarity);
+    }
+
+    private static GachaPoolItem? PickItem(List<GachaPoolItem> pool, int rarity)
+    {
+        var candidates = pool.Where(x => x.Rarity == rarity).ToList();
+        if (candidates.Count == 0)
+        {
+            candidates = pool.Where(x => x.Rarity == rarity - 1).ToList();
+            if (candidates.Count == 0)
+                return pool.FirstOrDefault();
+        }
+
+        int total = candidates.Sum(x => x.Weight);
+        if (total <= 0)
+            return candidates[Rng.Next(candidates.Count)];
+
+        int roll = Rng.Next(total);
+        int cumulative = 0;
+        foreach (var item in candidates)
+        {
+            cumulative += item.Weight;
+            if (roll < cumulative)
+                return item;
+        }
+
+        return candidates.Last();
+    }
+
+    private static string BuildResponse(int nId, List<List<uint>> awards, List<int> tbNew, List<bool> tbTrigger)
+    {
+        var sb = new StringBuilder();
+        sb.Append("{\"nId\":");
+        sb.Append(nId);
+        sb.Append(",\"tbAwards\":[");
+        for (int i = 0; i < awards.Count; i++)
+        {
+            if (i > 0)
+                sb.Append(',');
+
+            sb.Append('[');
+            sb.Append(string.Join(',', awards[i]));
+            sb.Append(']');
+        }
+
+        sb.Append("],\"nBoxCount\":0,\"tbNew\":[");
+        sb.Append(string.Join(',', tbNew));
+        sb.Append("],\"tbTrigger\":[");
+        sb.Append(string.Join(',', tbTrigger.Select(b => b ? "true" : "false")));
+        sb.Append("]}");
+        return sb.ToString();
+    }
+}
+
+internal sealed class GachaLaunchParam
+{
+    [JsonPropertyName("nId")]
+    public int NId { get; set; }
+
+    [JsonPropertyName("bPickUp")]
+    public bool BPickUp { get; set; }
+
+    [JsonPropertyName("nTime")]
+    public int NTime { get; set; }
+}
+
+internal sealed class GachaPityState
+{
+    public int ItemCount { get; set; }
+    public int TenCount { get; set; }
+    public int ProtectType { get; set; } = 1;
+    public int PoolTotalTime { get; set; }
+}
+
+internal sealed class GachaRuntimeConfig
+{
+    public List<GachaPoolItem> AllPoolItems { get; set; } = [];
+    public int ProtectThreshold { get; set; }
+    public List<PoolRarityRef> ProtectPools { get; set; } = [];
+    public PoolRarityRef? UpTarget { get; set; }
+    public int TopRarity { get; set; }
+    public int TenGuaranteeRarity { get; set; }
+}
+
+internal sealed record PoolRarityRef(string PoolName, int Rarity);