How do you play retro games?

Serious Sam HD (Xbox 360)

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

Xbox 360

ESRB Rating : unknown
BBFC Rating : 15 15
IFCO Rating : unknown
PEGI Rating : unknown
VET/SFB Rating : unknown
CERO Rating : unknown
USK Rating : unknown
OFLC (Australia) Rating : unknown
OFLC (New Zealand) Rating : unknown
Dejus Rating : unknown
FPB Rating : unknown
GRB : unknown
CCE (IGAC) Rating : unknown
COIAO Rating : unknown
DJCTQ Rating : unknown
KMRB Rating : unknown