Like Fusion, Zero Mission will keep you on your seat.

User Rating: 8.5 | Metroid: Zero Mission GBA
I'm extremely excited that Nintendo has made two excellent 2D metroid games for the Game Boy Advance almost back to back. The one major flaw that Fusion had, the inability to explore, has been pretty much fixed in Zero Mission. The story mode in Zero Mission is typical of most Metroid's in that it is a little bit lacking. Also, I believe that this is the first game that introduces Zero Suit Samus, but honestly it sucks when you have to play as her. You have a pistol, and it's a joke when you are trying to run away from so many space pirates. Also, this game made jumping on ledges an upgrade rather than just being able to start with it. Your jump seems a lot weaker in the start of this game. This game goes back to the classic, "kill the metroids" as are most other games in the series. Even though it is missing a few things from Fusion (or some things are just better in Fusion), this game is still very worthy and I had no problem playing it right after I beat Metroid Fusion. Both are excellent titles and I would suggest picking them up.