I admit that this was quite frustrating. It was hard to understand the appeal. It seems like it was just the same panel over and over. I still managed to appreciate how fast paced it was. These guys looked more like Terminators than aliens. I guess the game just went on forever.
It was a bit pointless, but still quite fun. It was mostly because I was motivated to keep on playing! I just wanted more powerups! Yep it's frustrating but at least you'll achieve something with it. It was weird to honor someone else dying on September 11th.