If you managed to grab Shadowgun for the BlackBerry PlayBook late last night when it was released, you'll want to go ahead and grab the latest update which is now appearing BlackBerry App World. At launch, some folks saw that the game was running a little bit slower than it should have been and the graphics were not as good as expected.
While there is no change log to accompany this v1.0 update, a quick run through of the game looks to of have improved upon some of those issues. If you're not seeing the update as of yet or are getting errors trying to download it, sit tight it's there and will filter out soon enough. Also, drop us some comments if you're seeing improvements with this release.