Romaji: Supēsu Inbēdā) is an arcade game that was ported to several systems. It is considered one of the best games ever released and was in the top 10 best games from Electronic Gaming Monthly.
The player plays as a tank that must shoot the invading aliens from above. The player will lose a life if one of the alien's shoots it or if the aliens reach the bottom of the screen. If the aliens reach the botton of the screen in some versions, the game will end regardless of how many lives the player has left.
It was later re-released on the Famicom, the Game Boy, and other systems. The most recent remake was on the DS, with Space Invaders Revolution.