Traditional heartburn surgery involves tiny incisions in the abdomen, through which surgical tools are inserted and a new valve is created that prevents stomach contents from rising up.
Rather than just make games, said Mr Elliott, Valve also let players become creators by giving them access to tools that let them modify or "mod" the studio's creations.
The specialized tools built for the job allowed Dextre to seal the connections between the tool and the fuel valve to eliminate the possibility of leaks.