Xenocide

Xenocide is a Space Invaders variant. The player's space ship is confined to the bottom of the screen and can only move left or right. The goal is to kill all approaching aliens before they manage to reach the bottom. Right above the player's position are three buildings which keep off attacks, but are slowly destroyed with every shot. This variant introduced a few additions to this classic formula. First, there are shields for both the enemies and the player's ship which means that not every sh...