Since its the may 24 weekend, the game spotlight has made one game free until may 24. I got the game, portal, free a few days ago. Then, I go to buy gmod 10. It says I need a Source SDK Engine game to run it. I checked, portals on the list. My dad finally finishes putting in the money, then it says I dont own a Source SDK game. WTH. I sent them and email telling them this. They said if this happened again, go to the help desk. I couldent find the helpdesk. I got screwed.