From the original Alien Breed on the Amiga, which was a 2D top-down shoot-everything-that-moves game, to the new Alien Breed Evolution – same genre, but with 3D graphics and eye-candy galore.

Here’s a gameplay video from the original:
http://www.youtube.com/watch?v=jFqtJLZ7SsU
And here’s the new one:
http://www.youtube.com/watch?v=C11K4k61224