Diehard Team Fortress 2 fans have spent all weekend sleuthing out Friday's tease, in which a "Gray Mann" is revealed to be the brother of Redmond and Blutarch Mann, owners of the game's RED and BLU teams. Tons of evidence suggest this is going to mean the introduction of a robot faction, which Valve itself all but…

If you remember 2011, there was an ambitious idea to build a first-person shooter in which 1000 people could play against each other.