Crossfire

In this adaptation of the arcade game Targ your job is to defend your city from marauding alien beasts. You can simultaneously maneuver your craft and shoot in four directions while patrolling the regular grid of streets – the enemy has surrounded your city block, and attacks are coming in from all sides as the aliens swarm in with all guns blazing. To survive, you’ll have to blast your way out by darting in and out of the line of fire and taking down the assailants with your own volleys: once they’re all eliminated, you go forth to the next level, to face yet another wave.