You may not be able to tell by the screen shot, but this early version of "Phoenix" features very nicely done grayscale graphics. The controls are nice, and even when the game is paused, you can see the grayscale. I have three complaints, though.
First, the built-in level is way too easy. Second, it doesn't support external levels. If this version supported external levels, I would like it better than the newer versions.
My third complaint is that the weapons are not well thought out. The first weapon is relatively weak, then the very next weapon kills most everything (including bosses) in about 2 or 3 hits. The last weapon (in my opinion) is worse than the second.
Other than those three things, this game is flawless:
Graphics: 10/10 nice grayscale
Speed: 10/10 perfect
Gameplay: 7/10 as mentioned above, there are flaws
Overall: 8.5/10 would be the best "Phoenix" version if it supported external levels.