This game shouldn't be forgotten.
Metroid II Return of Samus is the least known of the series. But in some ways, it's even more the godfather of newer 2d Metroid games then the original, as it was the first ever on a portable console.
While true it lacks some modern developments like an in-game map, and even on the Game Boy color it is a little dull in appearance, this game is loads of fun, and has a lot of awesome features. Among these is one that I wish they would bring back into newer games. Metroid 2 is (to my knowledge) the only 2d metroid game to feature the spider ball, a variation of the morphball which can climb up walls. Exploring with this is lots of fun, and lets you find many secrets.
This unsung member of the Metroid series is wonderful, and could only be improved by adding features that were unavailable when this game was made.
I completely recommend that Metroid fans pick this game up, it's a real treat, and a shame that more people don't play it.
Reviewed by: Andrew Listvinsky from USA on 7/24/2011