 Christopher Livingston started working on Concerned as a hobby . He had previously considered developing a webcomic that would parallel the storyline of the original 1987 Legend of Zelda , for the Nintendo Entertainment System , from start to finish . He chose the Half @-@ Life 2 game world as the scene for his comic because he was a fan , and because the availability of Garry 's Mod eliminated the need to draw by hand . He always intended the plot of the comic to end at the same point as the game . 
