Alien

Alien Conspiracy is a side-scrolling shooter created with Apple's Cocoa. The main character is a spy trying to destroy an alien craft that has crash-landed in the desert. Along the mission he must complete several objectives, like obtaining the coordinates of the craft's crash site or planting a bomb at the core of the ship. The enemies are varied and challenging, and the last commando presents additional troubles. There are five regular weapons, plus a bonus weapon available to the elite players.