New Moby Milestone: 50,000 unique games documented! 94,818 including all platform releases.

Metroid II: Return of Samus (Game Boy)

78
MobyRank
100 point score based on reviews from various critics.
...
MobyScore
5 point score based on user ratings.

Game Boy

ESRB Rating : Kids to Adults Kids to Adults (Descriptors: Mild Animated Violence)
USK Rating : unknown
OFLC (Australia) Rating : unknown
OFLC (New Zealand) Rating : unknown
ELSPA Rating : unknown
SELL Rating : unknown