Getting your hands on Steam is quick and easy. It is required to use the Source SDK tools, and it is also useful for keeping your games and tools organized. Once Steam is installed, downloading and installing Half-Life 2: Episode Two is a snap. Creating a mod is a great way to begin developing your own game with the source engine base code, but you still need to code to get what you want out of the game. Let's pick up the Hammer and see what we can do!