Colony 7 has the player protect a group of colonies on a planet's surface from successive waves of invading ships, in a structure reminiscent of Space Invaders but adding the management of multiple points to defend simultaneously, anticipating ideas the defense genre would later pick up.
It's an early and little-remembered piece of Taito's catalog, useful for understanding how the studio experimented with fixed-shooting variants in arcades' early years, before consolidating more famous series.
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