Alien Sector

Alien Sector or is an run-and-gun shooter game developed and published by Namco in 1985.
"Alien Shooter" runs on Namco Pac-Land hardware, but with a video system like that used previously on "Metro-Cross" and "Dragon Buster" (modified to vertical scrolling and a 1048 color palette) in 1995, the game was ported to Sharp X68000. Then released as compilation arcades in the "Namco Museum" series on PlayStation. It also appeared in "Namco Museum Virtual Arcade" on the Xbox 360, and most recently as one of the games available on "Pac-Man Pixel Bash".
Sequel to the game; "Baraduke 2" released in 1988, exclusively in Japan.