Invader

LSI Game Invader tasks the player with defending Earth from waves of alien attackers descending from the upper reaches of the screen. Promoted as a “portable version of authentic Invader,” it condenses the arcade concept into a vertical handheld battle, where the player’s cannon fends off a slow, methodical invasion.

The player controls a ground-based cannon using a three-position slider to move left or right, firing upward with a single red button. Rows of alien ships appear at the top of the VFD screen, inching downward each time the player fires. Destroying all invaders advances the level; missing too many shots allows them to close in. The game ends when the aliens breach the base. The VFD display glows in green and blue hues, with scoring displayed numerically above the playfield.