The world is in serious jeopardy, and you're the only one who can stop the alien menace before it puts an end to human existence. This classic shooter from the SNES days makes a glorious return in this Game Boy Advance incarnation. New weapons systems provide all sorts of exciting firepower, and updated graphics include multi-layered backgrounds and new character animations. There are dozens of enemy ships and boss characters to contend with on each level. There are also a few new screens that are GBA exclusives.