
Graphics
This is a Game Boy. So all things considered, the game looks great. Vivid color and detailed backgrounds bring the world of Zebes to life. The game may be 2D, but little details like keeping Samus' gun-arm on her right side make the game appear to be more than flat. The game also features some extremely well done cutscenes that may surprise some GBA owners.
Control

Sound
The sound in some of the more recent GBA games has been quite surprising, and Zero Mission certainly qualifies. The background music is somehow nostalgic and new at the same time thanks to remixed versions of music from the original NES game. Also, the varying sound effects from different monsters is a nice touch. In a game where you're constantly blasting stuff, it's nice hear something less redundant. Oh, did I mention it's in stereo if you use headphones?
Replay Value

Conclusion
It's Metroid. What more do you want? The game brilliantly blends a sense of nostalgia with a fresh experience. The presentation and gameplay are top notch for the hardware, and will leave you hoping for more. The story does go beyond where you would expect it to end, but it's still quite a short game. Hopefully they'll do something for the 20th Anniversary in 2006.
*** This review was written for Flamevault.com shortly after the release of the game. ***