We are working on an indie bundle for the available Microsoft platforms. Please take a look at Welcome to WBundle.com. If you are interested in adding your game to the bundle please contact us at firstname.lastname@example.org
I'm curious how this will work, since there are no promo codes and there's no true method for side-loading of this sort available...
There are two possible ways to make this work.
Combine the source code from the indie games to one source with a selctionmenu developed by wbundle. (This was our first idea). The only problem with this solution is the different project types available. Silverlight, XNA, etc.
The other idea was to create a component for the individual games where a promocode has to be entered. This means there will be WBundle versions of the game available in the store. We are still working on a good concept to make this option interesting for indie developers. (There are already a lot of ideas and we are probably implementing this option in the future)
If you have any other ideas how to make an indie bundle work for the Microsoft store, or help with the development. Please let us know.