The Xploding Boxes starts with five levels unlocked, and every time you beat a level, an additional level is unlocked. The end result of this is that if you ever get stuck, you can usually just skip ahead to the next level, because there are always a few that are unlocked.
The plan is to continue to release additional content and levels for this game. Version 1.1 of Xploding Boxes will add levels 101-120 and will be released by the end of February.
The game can be download for free with the first 25 levels available at no cost at all. Access to the remaining levels can then be gained by making a one time in-application purchase. This is done using the brand new In-Application payment API that was recently added. By using this when you upgrade to the full game, you do not lose any of the progress that you had already gained up to that point. This also requires that you have version 2.1 or higher of BlackBerry AppWorld installed.
Xploding Boxes requires a minimum OS of 5.0 and supports the 8520, 8530, 8900, 9300, 9330, 9500, 9520, 9530, 9550, 9630, 9650, 9700, 9780, and 9800. Gaining access to all levels requires that you have version 2.1 or higher of BlackBerry AppWorld installed in order to make use of the in-application payment API.