The Steam video game store has changed its content policy to "allow everything", unless it is illegal or "straight up trolling". The shift comes after controversy surrounding games which many people considered were offensive. A school shooting simulation game was removed from the store last month. But now games publisher Valve, which owns Steam, said it was not up to the company to decide what should or should not be on sale. The new policy paves the way for pornographic games to be made available on the platform, including in virtual reality. It would make the Steam store the first...