The biggest part of 2.0 is the Level editor. The player can create their own custom levels and save them to their phone to play later. If they choose they can upload the level to the database, there will be downloading of levels in the future release, but as of now the best levels will be added to the main level pool.
Version 2.0 of Bloxx was just certified and published today, look for it on the windows phone marketplace sometime between tonight and tomorrow (it takes some time to display).
Posted by FarrisArts on