Google announced two new Chrome Experiments that harken back to retro gaming and the boardwalk. Both experiments use multiple devices to connect players via the web without any apps to download or credits to purchase. Roll It is a skee ball game played with a mobile phone and desktop/laptop display. Racer is a, get this, racing game played with up to 5 mobile phones with no lag.
Play Roll It Now.
Play Racer Now.
The Google Chrome blog explains the experiments in more detail.