These are the types of games and apps RIM is hoping to attract to the BlackBerry Platform. One of the good examples is Doodle God from JoyBits which they just ported to the BlackBerry PlayBook. In case you are not familiar this game is sort of like Alchemy where you mix and match different elements to create things. Its sort of a fast pace puzzle game that is easy to pickup but hard to beat.
You can now find Doodle God in App World for $1.99. Hopefully a free version will also be coming soon though they do that with in app payments on other platforms so it might be awhile.