The very first version of the website went live in October, 2014. Kyle Kubik, known as /u/username303 on the subreddit, built the website, as we were having trouble organizing the game jam on the subreddit. It helped tremendously, but the website was sorely lacking, and Kyle didn't have significant experience with building websites. As a testament to that, the unique identifiers for games was their title, which meant that no game could have the same name.
The first version of the gm(48) website went live in October, 2014.