If you mean chronologically, then the order is: Metroid/Metroid:Zero Mission, 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, and finally, Metroid Fusion. If you mean by releases, then the order consists of this: Metroid, Metroid II, Super Metroid, Metroid Fusion, Metroid Prime, Metroid:Zero Mission, Metroid Prime 2: Echoes, Metroid Prime Pinball, Metroid Prime Hunters, Metroid 3:Corruption, and finally, Metroid:Other M.

Nintindo Entertainment System

-Metroid

Gameboy

-Metroid II: Return of Samus

SuperNintindo

-Super Metroid

Gameboy Advanced

-Metroid Fusion

-Metroid Zero Mission

Gamecube

-Metroid Prime

-Metroid Prime 2: Echoes

DS

-Metroid Prime Hunters

-Metroid Prime Pinball

Wii

-(Gamecube Games)

-Metroid Prime 3: Corruption

-Metroid: The Other M

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*

1) Metroid Prime

2) Metroid Prime Hunters

3) Metroid Prime 2 Echoes

4) Metroid Prime 3 Corruption

5) Metroid Prime Pinball

6) Metroid Prime Trilogy

there are 6 Metroid Prime games

Yes samus is a girl. you can find that out by winning any of the following games: metroid, metroid 2, metroid prime, metroid prime 2, metroid prime 3, metroid zero mission and even more!