Unity has put out another one of the popular games built on their gaming engine to the PlayBook. The latest is called Super Crossfire from Radian Games. They dub it an “intense shooter with a unique twist.” Its like the classic arcade shooter games of yesteryear with the twist being the ability to warp between the top and bottom of the screen. There are loads of upgrades to be had for your ship and tons of enemies to blast away.
You can find Super Crossfire in App World for $4.99. You can get an idea of the gameplay from their iOS trailer: