Bossfights.<p>If you have two thumbs, two hands, wrapped around a device it doesn&#x27;t take much to break things.  Phone touchscreens are built on the assumption the user is looking at the screen, targeting an icon of some sort.  I think people will use much more force when the aren&#x27;t looking at the screen, when they are jabbing at a stationary icon&#x2F;button hundreds of times during a play session.