Mass Effect 3, the biggest game of 2012 so far, can be played on Eurogamer right now.
The Gaikai-powered Mass Effect 3 demo can be streamed instantly from Eurogamer's dedicated Gaikai page. There are some other games there to try, too.
Streaming a game using Gaikai requires Java and an internet connection. You don't need to be on a power PC. That's the point - nearly any machine can run Gaikai and, therefore, games.
Eurogamer's Mass Effect 3 review awarded a show-stopping 10/10. The trilogy BioWare introduced in 2007 is at an end, although the universe will somehow live on.
There's been some fall-out about the ending of the game, but for those of you whom Mass Effect 3 has passed by, now may be the perfect time to try it. I can't think of a reason why not, other than you're at work. And that's a weak excuse at best.