But it's easy to see how it's since established itself as Half-Life 2's chief multiplayer component given that the majority of people who own the original Half-Life and still go online with it choose to play Counter-Strike, why waste time and resources trying to reinvent the multiplayer wheel when you can just polish an unbroken concept and re-release it as a pre-order bonus? Go, go, go! If asked, Valve will tell you that Counter-Strike: Source originally began life as an experiment, designed to demonstrate how easy it is to port Half-Life modifications to the Source Engine.