Atari Arcade Shoreditch - was a special one night event put on by Microsoft to show off Internet Explorer 10 / Windows 8. The tablets were all playing a bunch of HTML5 versions of classic Atari arcade games in a ‘clubby’ environment.
www.atari.com/arcade (no ads if viewed in IE)
They also had a browser based version of ‘Contre Jour’ some levels are only accessible in IE10 - which supports multi-touch.
http://www.contrejour.ie/
It was as smooth and playable as the native windows phone version (and presumably iOS version)
Nice to see microsoft seeing the gaming potential of windows 8 and not by only riding on the xbox brand. RIP Minesweeper/Hearts.