I admit that this game wasn't quite as good as I thought it would be. It just has a very cool layout. I think I'm going to the next stage at least when I'm at the end of the screen and start something new. I did like how fast paced it was. These are what a lot of classic arcade games were like. The enemies don't seem that alien to me.
They seem more robotic. I think the graphics are done pretty well. You really have to learn how to duck. It's nice to have some pretty good variety in how the enemies look. All in all, definitley a good game.