WoW
The Whoa and Thunderbrew projects are based on the mission of recreating a faithful and open-source implementation of the World of Warcraft 3.3.5a.12340 Wrath of the Lich King client.
Why work with 3.3.5a mainly?
The game and its libraries have become significantly more complex in the intervening 10+ years. By picking 3.3.5a, it's possible to imagine our implementation will eventually be complete.
Study
Many attempts have been made throughout history to study the internals of this client.
Compilers
On Windows, the client was known to be compiled using the Microsoft Visual C++ Compilerbut which version?.