When a developer creates a game, they write it in human-readable programming languages like C++. This collection of scripts and logic is the "source code." It is the blueprint of the game. When you buy a game, you are not buying this blueprint; you are buying a "compiled" version—machine-readable code that your computer can execute, but which is essentially gibberish to a human.
In the modding underground, "leaks" are a double-edged sword. They provide the tools necessary for creation, but they exist in a legal grey area. Several years ago, portions of the Homefront source code began circulating on modding forums and torrent sites. homefront source code
For gamers, it is the key to reviving a forgotten shooter. With the source, Homefront transforms from a 4-hour rental into a sandbox of alternate history. When a developer creates a game, they write