We've built a very nice platform to create, publish and play HTML5 games using just a browser, called Gameleon. The overall idea is to have everything built visually, online, using a browser. You can download the platform's virtual machine running a MMORPG server, and publish the content from the cloud onto the system with a single click.
In many ways, from administration, to publishing and even monetizing, this is "WordPress for game creators" Furthermore, this is Open Source. The realm itself is open source and we want to release an API to integrate with the editor, to add your own functionality and features to it. If you're thinking the games can run just in the browser, we have some nice experiments on the pipeline aimed at exporting native apps for iOS and Android. Will update soon.
We will start the public beta in a few days and you can find out all about us at http://www.gameleon.co
and at http://www.kickstarter.com/projects/341 ... r-everyone
(if you like it, spreading the word would be greatly appreciated and we'll call you awesome forever!)
There is also an asset market and there are built-in methods to monetize resulting games - http://www.gameleon.co/platform/monetizing
The main reason I've started this thread is to ask you guys what you think about it, would you see yourselves building, or what would you would contribute to the source code, to make even greater games! Democratize games FTW!