Sony were woolly about what Gaikai can do for PlayStation in February, and they haven’t really expanded beyond that too far since. The idea is that huge server banks running as PlayStation 3s will stream games over the internet to your PlayStation 4 console, but the numbers (both in terms of server capacity and the games themselves) have been kept under wraps.

That’s probably because, at least back at the beginning of the year, the idea was mostly conceptual. We’re sure Gaikai have the tech, but it’s doubtful there’s a great deal working just yet. And the service, when it does appear in 2014, will be limited to those in the US at first. When it’ll appear over here, and in what guise, is anyone’s guess.

You can watch Andrew House talking about Gaikai at E3 above.

Today we’ve also learnt that it’ll only work with “the best” PS3 games, unless that’s just an unfortunately choice of words. The latest Access PS episode fills in the gaps, but it’s a little disappointing to hear it’s not – potentially – going to be the entire range. The goal is apparently “to eventually have many more legacy PlayStation titles” available.

At least the video shows Journey, The Last Of Us and Uncharted 3, which would be a great starter.

Hopefully we’ll hear more about Gaikai for European users at Gamescom next month, the first time Sony have talked about the next-gen console outside of the US in any great capacity.