The most evil video game ever.
Bub and Bob trap monsters inside a bubble, first letting them asphyxiate for some time. Then, when they gasp futily for air, the dragons will pop the bubble,finally killing the monster. The suffering isn't over, however; the monster's soul will turn into a food product, and the dragon will then eat it.
Undoubtedly, the greatest game to ever grace this planet.
Bub trapped the wind-up monster in a bubble; then, when it was nearly dead from suffocation, he popped the bubble, sending the gasping monster flying across the room, smashing its skull on the wall. Bub then ate the monster's soul.