

It allows you to see a range of information about the game and you can use it to change the way the engine behaves. The Half Life 2 Console is a window into the game's Source engine. Now you can open and close the console at any time by pressing the '~' key (the key under ESC). To enable the Half Life 2 console, you will first need to go into the in-game options, and under the Keyboard tab, click the Advanced button and tick the 'Enable developer mode (console)' option (see the Keyboard option under the In-Game Settings section above). Make sure you read through this information carefully otherwise the tweaks in the Advanced Tweaking section will not function correctly if at all: The way to access and use each method is covered below. This is no coincidence - although Half Life 2 has a completely different engine from Doom 3, it is the sign of an advanced and highly modifiable engine that you can access a large range of command variables in a variety of ways. There are a lot of similarities between tweaking Doom 3 and Half Life 2. If this section looks familiar to you, that's because you may have seen something just like it in my Doom 3 Tweak Guide. These various methods usually result in the same outcome for each command, however they provide flexibility in the ways in which you can test, add, edit and remove cvars for the game.

There are four main ways in which you can implement command variables in Half Life 2: In the game's Console through Config (.cfg) files in the Steam Launch Options box or in your game icon's Target box. This section provides details of how to tweak Half Life 2 correctly using the command variables, and the next few pages provide a list of the more useful command variables and what they do.

This gives us an excellent opportunity to tweak Half Life 2 to its fullest potential. The Source Engine by Valve is highly customizable: there are over 1800 Command Variables (cvars) which can be used to alter everything from the way the game allocates memory to providing additional game information to recording demos and running custom benchmarks. You can change more than just the handful of settings available under the in-game options in Half Life 2.
