Yesterday, the official SteamDB Twitter page revealed that the source code for Team Fortress 2 had been leaked to the public. This had caused a lot of concern for many players and Valve themselves as it opened a potential security risk inside their popular multiplayer games.

Valve might not have been involved with E3 this year, but it was still beavering away behind the scenes on its most popular title. The DOTA 2 Reborn beta went live yesterday, moving the entirety of the MOBA over to the Source 2 engine; the first game to do so.