Imagine all the modding that could be done with access to the source code.,(reply>), @Lagner a not really, just copy the entire code, change a few little uninportant Details in a way that they serve the same function and voila; you got yourself a product for free, that cost some company hundreds of people, hundreds of millions of dollars and about 7 years to create. Its also called; Going Chinese,(reply>), Someone will patch all the bugs.,(reply>), @Lagner a It is illegal and bad to use those made with leaked source code. Who made the mod can put a backdoor on the program. It may seem highly unlikely but it is actually worth it considering the amount of system it can affect.,(reply>), @Lagner a technically yes but you can implement it in a different way, close to the function of the source code and still get away with it. See dolphin for an example,(reply>), i think it is illegal to make mods using leaked source code