Have you ever received such power that you could destroy a whole metropolis city? Did you feel the power that makes you invincible in front of whole crowd of real soldiers?
Become an almighty dragon kaiju dinosaur and get unlimited power. Destroy the city, ruche each house into the smallest parts. Eliminate crowd of soldiers guarding the city.
Breathe fire at your opponents. Deal with the city as you wish, because absolutely every building is destroyed according to honest physics.