Those of you lucky enough to be at GamesCom this year will probably already have seen this footage, as it was used by Valve at that event.
Today, it’s been released for wider public consumption. The trailer shows a lot of in-game shenanigans with robot buddy Wheatley, who you may recall from the earlier this year. His voice, however, has now changed to that of – known in the UK for The Office, Extras and some annoying bank adverts, and known in the US for being a man with a British accent.
Scan below for the video, plus some new screenshots.