diff --git a/src/nbt/IntTag.cpp b/src/nbt/IntTag.cpp
index 6d45611..b43e507 100644
--- a/src/nbt/IntTag.cpp
+++ b/src/nbt/IntTag.cpp
@@ -54,7 +54,7 @@ namespace nbt
 
     void IntTag::readStringifiedValue(StringReader &reader)
     {
-        float val = stof(reader.readNumber());
+        float val = stoi(reader.readNumber());
         value = val;
 
         if(reader.peek() == 'i')
diff --git a/src/nbt/LongArrayTag.cpp b/src/nbt/LongArrayTag.cpp
new file mode 100644
index 0000000..aea5b2b
--- /dev/null
+++ b/src/nbt/LongArrayTag.cpp
@@ -0,0 +1,104 @@
+#include "LongArrayTag.h"
+#include <iostream>
+#include <iomanip>
+#include <sstream>
+#include <stdexcept>
+
+namespace nbt
+{
+
+    LongArrayTag::LongArrayTag() : Tag()
+    {
+        // Default constructor
+    }
+
+    LongArrayTag::LongArrayTag(const std::vector<long> &value) : Tag(), value(value)
+    {
+        // Constructor with initial value
+    }
+
+    void LongArrayTag::readValue(ByteLayer &data)
+    {
+        int len = data.readInt();
+        value.clear();
+        for (int i = 0; i < len; i++)
+        {
+            value.push_back(data.readLong());
+        }
+    }
+
+    void LongArrayTag::writeValue(ByteLayer &data) const
+    {
+        data.writeInt(static_cast<int>(value.size()));
+        for (int i : value)
+        {
+            data.writeLong(i);
+        }
+    }
+
+    TagType LongArrayTag::getTagType() const
+    {
+        return TagType::LongArray;
+    }
+
+    dynamic LongArrayTag::getValue() const
+    {
+        return dynamic(value);
+    }
+
+    void LongArrayTag::setValue(const dynamic &val)
+    {
+        value = val.get<vector<long>>();
+    }
+
+    void LongArrayTag::prettyPrint(int indent, bool recurse) const
+    {
+        std::cout << std::setw(indent) << std::setfill('\t') << ""
+                  << Tag::getCanonicalName(getTagType()) << ": [";
+        for (size_t i = 0; i < value.size(); i++)
+        {
+            std::cout << value[i];
+            if (i < value.size() - 1)
+            {
+                std::cout << ", ";
+            }
+        }
+        std::cout << "]";
+    }
+
+    void LongArrayTag::writeStringifiedValue(StringBuilder &builder, int indent, bool isList) const
+    {
+        builder << (isList ? std::string(indent, '\t') : "") << "[L; ";
+        for (size_t i = 0; i < value.size(); i++)
+        {
+            builder << value[i] << "L";
+            if (i < value.size() - 1)
+            {
+                builder << ", ";
+            }
+        }
+        builder << "]";
+    }
+
+    void LongArrayTag::readStringifiedValue(StringReader &reader)
+    {
+        std::string temp;
+        reader.expect('[');
+        reader.expect('L');
+        reader.expect(';');
+        value.clear();
+
+        while (reader.peek() != ']')
+        {
+            uint8_t num = stol(reader.readNumber());
+            value.push_back(num);
+
+            reader.expect('l');
+
+            if (reader.peek() == ',')
+                reader.next();
+        }
+        reader.expect(']');
+    }
+
+}
\ No newline at end of file
diff --git a/src/nbt/LongArrayTag.h b/src/nbt/LongArrayTag.h
new file mode 100644
index 0000000..5e5c67d
--- /dev/null
+++ b/src/nbt/LongArrayTag.h
@@ -0,0 +1,40 @@
+#ifndef LONGARRAYTAG_H
+#define LONGARRAYTAG_H
+
+#include "Tag.h"
+#include "../utils/ByteLayer.h"
+#include "../utils/StringBuilder.h"
+#include "../utils/StringReader.h"
+#include "../types/dynamic.h"
+#include <vector>
+#include <string>
+#include <sstream>
+
+using namespace libac;
+using namespace std;
+
+namespace nbt
+{
+
+    class LongArrayTag : public Tag
+    {
+    public:
+        LongArrayTag();
+        LongArrayTag(const std::vector<long> &value);
+
+        // Override functions from the Tag class
+        void readValue(ByteLayer &data) override;
+        void writeValue(ByteLayer &data) const override;
+        TagType getTagType() const override;
+        dynamic getValue() const;
+        void setValue(const dynamic &val) override;
+        void prettyPrint(int indent, bool recurse) const override;
+        void writeStringifiedValue(StringBuilder &builder, int indent, bool isList) const override;
+        void readStringifiedValue(StringReader &reader) override;
+
+    private:
+        vector<long> value;
+    };
+}
+
+#endif // LONGARRAYTAG_H
diff --git a/src/nbt/LongTag.cpp b/src/nbt/LongTag.cpp
new file mode 100644
index 0000000..2aebe54
--- /dev/null
+++ b/src/nbt/LongTag.cpp
@@ -0,0 +1,62 @@
+#include <string>
+#include <iostream>
+#include <iomanip>
+#include "LongTag.h"
+
+using namespace libac;
+using namespace std;
+
+namespace nbt
+{
+
+    LongTag::LongTag() : Tag(), value(0.0)
+    {
+    }
+
+    LongTag::LongTag(long val) : Tag(), value(val)
+    {
+    }
+
+    void LongTag::readValue(ByteLayer &data)
+    {
+        value = data.readLong();
+    }
+
+    void LongTag::writeValue(ByteLayer &data) const
+    {
+        data.writeLong(value);
+    }
+
+    TagType LongTag::getTagType() const
+    {
+        return TagType::Long;
+    }
+
+    dynamic LongTag::getValue() const
+    {
+        return dynamic(value);
+    }
+
+    void LongTag::setValue(const dynamic &val)
+    {
+        value = val.get<long>();
+    }
+
+    void LongTag::prettyPrint(int indent, bool recurse) const
+    {
+        cout << setw(indent) << setfill('\t') << Tag::getCanonicalName(getTagType()) << ": " << value;
+    }
+
+    void LongTag::writeStringifiedValue(StringBuilder &builder, int indent, bool isList) const
+    {
+        builder << (isList ? std::string(indent, '\t') : "") << value << "l";
+    }
+
+    void LongTag::readStringifiedValue(StringReader &reader)
+    {
+        float val = stol(reader.readNumber());
+        value = val;
+
+        reader.expect('l');
+    }
+}
\ No newline at end of file
diff --git a/src/nbt/LongTag.h b/src/nbt/LongTag.h
new file mode 100644
index 0000000..4a3d4fe
--- /dev/null
+++ b/src/nbt/LongTag.h
@@ -0,0 +1,34 @@
+#ifndef LONG_TAG_H
+#define LONG_TAG_H
+
+#include "Tag.h"
+#include "../utils/ByteLayer.h"
+#include "../utils/StringBuilder.h"
+#include "../utils/StringReader.h"
+#include "../types/dynamic.h"
+
+namespace nbt
+{
+    class LongTag : public Tag
+    {
+    public:
+        LongTag();
+        LongTag(long val);
+        ~LongTag();
+
+        // Function overrides
+        void readValue(ByteLayer &data) override;
+        void writeValue(ByteLayer &data) const override;
+        TagType getTagType() const override;
+        dynamic getValue() const override;
+        void setValue(const dynamic &val) override;
+        void prettyPrint(int indent, bool recurse) const override;
+        void writeStringifiedValue(StringBuilder &builder, int indent, bool isList) const override;
+        void readStringifiedValue(StringReader &reader) override;
+
+    private:
+        long value;
+    };
+}
+
+#endif
\ No newline at end of file
diff --git a/src/nbt/Tag.cpp b/src/nbt/Tag.cpp
index 7724236..ca578bd 100644
--- a/src/nbt/Tag.cpp
+++ b/src/nbt/Tag.cpp
@@ -7,6 +7,9 @@
 #include "CompoundTag.h"
 #include "IntArrayTag.h"
 #include "IntTag.h"
+#include "ListTag.h"
+#include "LongArrayTag.h"
+#include "LongTag.h"
 #include <cctype>
 #include <algorithm>
 
@@ -40,6 +43,12 @@ namespace nbt
             return new IntArrayTag();
         case TagType::Int:
             return new IntTag();
+        case TagType::List:
+            return new ListTag();
+        case TagType::LongArray:
+            return new LongArrayTag();
+        case TagType::Long:
+            return new LongTag();
         default:
             // default handling
             return nullptr;
diff --git a/src/utils/StringBuilder.cpp b/src/utils/StringBuilder.cpp
index c9c76d0..658d068 100644
--- a/src/utils/StringBuilder.cpp
+++ b/src/utils/StringBuilder.cpp
@@ -62,4 +62,12 @@ namespace libac
         append(oss.str());
         return *this;
     }
+
+    // Overload operator<< for longs
+    StringBuilder& StringBuilder::operator<<(long value) {
+        std::stringstream oss;
+        oss << value;
+        append(oss.str());
+        return *this;
+    }
 }
diff --git a/src/utils/StringBuilder.h b/src/utils/StringBuilder.h
index e362828..7b823d8 100644
--- a/src/utils/StringBuilder.h
+++ b/src/utils/StringBuilder.h
@@ -23,6 +23,7 @@ namespace libac
         StringBuilder& operator<<(char value);
         StringBuilder& operator<<(int value);
         StringBuilder& operator<<(double value);
+        StringBuilder& operator<<(long value);
     private:
         std::string buffer;
     };