Tac/Scan

Tac/Scan is a 1982 space combat shooter video game originally released as an arcade game, and later ported to the Atari 2600. It was also included as an unlockable game in the PlayStation 2 version of Sega Genesis Collection. It was developed by Sega Electronics and published by Sega of America. The game was notable for its 3D vector graphics that switched between an overhead and third-person perspective, and for its tactical elements, putting the player in command of seven units in squadron formation through waves of attacking enemies; the player can gain reserve units, while being able to command the units to perform various actions, including firing at enemies, getting into formation, or a "tac" maneuver.