Majestic Twelve: The Space Invaders Part IV

The grand, graphics-rich, and enjoyable crown of the Space Invaders phenomenon. It has great music, neat animation, many species of enemies, and plenty of tongue-in-cheek humor such as the Cattle Mutilation bonus game (you shoot UFOs before they can steal your cows, and it reminds me vaguely of Missle Command.) It's a tribute, a self-parody, and a very nice game. They sure don't make em like this anymore!