Arcade Game: Vulgus (1984 Capcom)
countless enemies. Only laser blaster and limited amount of bombs are your only weapons. The background moves forever and never stops where you can move left, right, up, and down. Some enemies are realistic flying saucers and others have a distinctive look. The game has no levels so it's endless. The backgrounds do change from time to time from planetary surfaces to space scenes and will start repeating once you blast the large alien formation.
Released on May 1984. This is Capcom's first game. Capcom derived from the words "Capsule Communication". Capcom is best known for "Mega Man" and "Street Fighter" games franchise.
Gameplay starts at 2:51
Note: Used invincibility cheat after down to last life. The game is endless so I quit afterwards.