“GMod hasn’t just given me financial stability,” wrote Newman on his blog. “It’s also made me a lot more experienced in c++. I learned how game engines are meant to work. I got to fly to Valve HQ.”

The Source-powered mod allows gamers to take models from various games into an open sandbox and play with them accordingly. It is usually used for forum lulz, but also has serious uses. The mod requires at least one Source-engine powered game to be installed.