There are buttons along the top of the screen to get to the other pages. "Folding" will take you to the defense trainer.
Recent community posts
It's amusing to watch the destruction happen. Though, it usually ends before the destruction gets too crazy, and some particle effects for fire or explosions would go a long way towards making it more interesting to watch. Sometimes the frog gets pushed into a tunnel and you can't see much, so it might be better to have a fixed camera angle, too. Still, always fun to watch destruction happen!