Faulty game cards mean 70% of the levels are unreachable.
North American players of Bubble Bobble Revolution found a nasty surprise when playing through New Version mode of the game. Upon reaching level 30, the boss never appears, making the level unclearable. With no way around this unfortunate glitch, the remaining 70 levels cannot be accessed.
Codemasters customer support has confirmed the problem and issued the following statement:
We have been looking very hard into this issue with Nintendo and have now determined that all of the cartridges that have been shipped in North America are faulty. Needless to say we are extremely sorry that this situation has arisen and would like to apologise to you for this issue.
We have already started the process whereby a corrected version is to be manufactured and will ensure that all customers have their copies replaced. Unfortunately this will take 8-10 weeks (simply because of the time required to manufacture new carts). We will update you with what you will need to do to get a replacement game, as soon as this has been determined.
Those considering purchasing the game will probably want to wait until the fixed version is released. The problem does not affect game cards from other regions.