Short Gameplay: Bubble Bobble (NES)

Bubble Bobble (バブルボブル Baburu Boburu?) is an arcade comical action platformer video game by Taito, first released in 1986 [2] and later ported to numerous home computers and game consoles.[3] The game, starring the twin Bubble Dragons Bub (Bubblun) (バブルン Baburun?) and Bob (Bobblun) (ボブルン Boburun?), in which players travel through one hundred different stages, blowing and bursting bubbles, dodging enemies and collecting a variety of items.[2] The game became popular and led to a long series of sequels and spin-offs. The main goal of the game is to rescue Bub and Bob's girlfriends from the Cave of Monsters. It is an early example of an action game with multiple endings, which depend on the player's performance and discovery of secrets.

Extract from Wikipedia.