Gamescom opens in Germany on Wednesday . Held in Cologne , Germany , the event is billed as the world 's largest trade fair for interactive games and entertainment . Event is world 's largest trade fair for video games . Comment: `` XCOM , '' `` Diablo '' and `` Dead Rising '' updates to be shown .
Gamescom opens in Germany on Wednesday . Event is world 's largest trade fair for video games . Comment: `` XCOM , '' `` Diablo '' and `` Dead Rising '' updates to be shown .