HTML 5 is completely ready for worldwide implementation. I know, some developers might not agree, but how else could you play a game of Pac-Man coded in the stuff? Pac-Man, Quake, what else is there? [Pac-Man via HackerNews via webmonkey]
https://gizmodo.com/giz-explains-why-html5-isnt-going-to-save-the-internet-5461711
