Once the modified game became more popular than the original, the original creators of the game took notice – the modders “Gooseman” and “Cliffe” were contacted by Valve who then began to take part in creating the first real store-bought release. Back when the game Half-Life was introduced, a community of modders changed it into the game we now know as Counter-Strike.
What it means to modify a game in today’s hardcore environment of developers is to create a full-on different version of a game.