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Overview
The player controls a ship that moves laterally at the bottom of the screen and fires vertically. Four large bases provide protection from enemy fire, but also block the player's shots. These get damaged when shot. Enemies move as a group laterally across the screen until they reach the edge, move down one row, and reverse direction. Enemies return fire at the player, and the player must destroy all enemies before they reach the bottom of the screen. Enemy speed increases as more invaders are removed from the group. UFOs move across the top of the screen which can be destroyed for bonus points.
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Cooperative
No
ESRB
Not Rated