Another gem in BlackBerry 10's early game selection is Eufloria HD, which recently made its debut on PlayBook as well. This is an absolutely sublime abstract strategy title where players have to fertilize asteroids while protecting their own against competing life forms. Every asteroid has its own unique resources, which determine the strength and speed of the seedlings it produces.
The haunting music sets a very calm tone, though the gameplay can become quite frantic, especially if you flip on fast forwarding. Eufloria has been around for awhile, so you can count on it being well-balanced, plus those that have played it elsewhere may already have a soft spot and will end up grabbing it again. Eufloria is really elegant, and for $2.99, it's hard to go wrong.
Have you guys found any good strategy games on BlackBerry 10 lately? What are you playing mostly?