The game - Bubble Bobble - Dendy | NES

The little dragon spits bubbles that envelop enemies. Now, if you break such a bubble with the enemy, then the prize fell out. Having turned all the enemies into prizes, and having collected the last ones, we move to the level below. And this will continue for a very long time. In the end, there will be a fight with the final boss and the release of the dragon's girlfriend.