There are two versions of the app - a free one and a paid edition (for £1.00) although I can't see what the difference is. Both have the same three levels - so for now I would stick with the free one. The game is probably targeted at kids and they will love it for sure, however there is something strangely satisfying about the game and I found myself getting quite into it.
The gameplay is smooth and the graphics are decent, however sounds are limited with just the occasional noise when a zombie chick hatches. It would be nice to have some funky music to play along to. For a free PlayBook download Bag Egg is worth checking out. It may not be the most exciting game but for killing some time or keeping the kids entertained it is perfect.
More information/Download Bag Egg free for BlackBerry PlayBook