I find myself playing quite a few more games on my BlackBerry PlayBook compared to my Torch. I think the bigger screen and abundance of free puzzle games is what really does it for me. The latest I have discovered is aitch from Birnam Designs. The game is a slick puzzle game where you use the different objects on the screen to aim your ship at the target while avoiding asteroids and other obstacles. The only real downside is the game is limited to portrait view only.
From the description:
You are Mr. Aitch, assistant to a brilliant but dangerously forgetful scientist. You must go behind him and turn off his experiments before they wreak havoc on the universe!
Solve puzzles and get to the switch by aiming and launching your ship. Avoid dangerous asteroids, use the gravity of nearby planets and stars, and bounce off of exotic Rimorr Fields. There might be more than one solution! You get additional points for accuracy and the number of elements you interact with. Free version comes with one ship type and 36 levels. Premium version will be released soon!