You can, but i don't know how. And there is no game called "Metroid Zero". Did you mean "Metroid Zero Mission"?
Yes, if you have the right codes for the game and the region. I have previously used codes on the Super Metroid Phazon Hack and the hack for Metroid Zero Mission.
Metroid Zero Mission - 2004 VG is rated/received certificates of: USA:E
You turn on your GBA with Metroid Zero Mission and link it to your GBA with Metroid Fusion, BUT when you turn on Fusion, hold select and start or maybe it's L and R but the Nintendo sign will disappear. Then on the Zero Mission menu, you select Fusion Link and then it downloads the entire Fusion Gallery to your Zero Mission cartridge. Enjoy!
No. The one people know it as is "Metroid: Zero Mission".
Currently 12, (not counting Metroid Prime: Trilogy and Zero Mission), and one unreleased, which is Metroid: Other M (making number 12). The chronological order of the games are: Metroid/Metroid: Zero Mission. (Zero Mission was a remake of the original Metroid) Metroid Prime/ Metroid Prime Pinball Metroid Prime: Hunters Metroid Prime 2: Echoes Metroid Prime 3: Corruption Metroid II: Return of Samus Super Metroid Metroid: Other M Metroid: Fusion *Note that these are NOT listed by release dates*
There is no next mission there is the awesome game Metroid Fusion (metroid 4) have a good day
Shinesparking helps
There is already a Metroid game that lets u play as zero suit Samus and it is called Metroid: Zero Mission for the GBA.
This version has a save feature, so you dont need them
Beat normal mode.
It depends what you like. In Zero Mission, you are more stealthy in some parts and is a remake of the original, and Fusion, it is rather scary, and you have to use your mind a LOT. But that is really in all Metroid games, but you get what I'm saying.