Use the arrow keys to fly and space to fire a missile. Survive as long as you can!
Strategy: There are 3 types of enemies in this game: Jumpers- These aliens will hide at the bottom (or top) of the screen and then quickly jump up in front of you. They can be hard to hit, so eliminate them before they fall out of the air. Gliders- These follow a gentle wavy pattern (a sine wave for all you trig people) and are pretty easy to hit. Just make sure you don't ignore them by accident. Flatliners- These run in straight lines right across the middle very quickly. It's easy to eliminate them in large numbers as your missile will pass through a complete line in one shot. Here is a link to the original. I modified it quite a bit. http://www.classicgamesarcade.com/game/21739/chopper-drop.html