By porting games into a play-in-browser model you reduce the cost of cross-platform development, enable instant play and allow for more widespread marketing reach on social platforms – like Facebook.
Publish sections of games online and allow customers to directly play plug-in-free mini games. This builds a relationship with the user dramatically improving conversion into the paid, full-version game.
HTML5 & WebGL will fundamentally shift our experience of the web. It changes the rules for how games are distributed – no longer is the browser an information carrier, it can be the game itself.