This is the single most important standard library for Metin2 development. Since Metin2 sends data in little-endian format, the struct library allows you to pack and unpack this data.

While Metin2 uses a custom XOR-based encryption for its standard pack files, many private servers implement additional layers of security using AES or TEA (Tiny Encryption Algorithm). The Crypto.Cipher module in PyCryptodome is the standard for implementing these algorithms in Python.

| Challenge | Explanation | |-----------|-------------| | | Most Python tools target server versions from 2015-2018. Recent encryption (XOR + AES) breaks many packet libraries. | | No official support | Gameforge does not endorse or document any Python API. All libs are reverse-engineered. | | Risk of bans | Using Python bots or packet injectors on official servers leads to permanent bans. | | Performance | Python is slower than C++ for real-time game logic. Never use it inside the core game loop. | | Incomplete coverage | No single library handles everything —you’ll need to combine 3-5 different modules. |