How do you play retro games?

Unreal II: The Awakening

Windows

ESRB Rating : Mature Mature (Descriptors: Blood and Gore, Violence)
TIGRS Rating : unknown
BBFC Rating : unknown
IFCO Rating : unknown
PEGI Rating : 16 16 (Content Indicator: Violence Violence)
VET/SFB Rating : 18 (Square) 18 (Square)
CERO Rating : unknown
USK Rating : 16 16
OFLC (Australia) Rating : MA15+ MA15+
OFLC (New Zealand) Rating : R16 R16 (Descriptors: Violence)
Dejus Rating : unknown
FPB Rating : unknown
GRB : unknown
CCE (IGAC) Rating : unknown
COIAO Rating : unknown
RSAC Rating : unknown
ELSPA Rating : 15+ 15+
aDeSe Rating : unknown
Kijkwijzer Rating : unknown
SELL Rating : 16 16
DJCTQ Rating : 18 (Descriptors: Objetos freq├╝entemente)
KMRB Rating : unknown


Xbox

ESRB Rating : Mature Mature (Descriptors: Blood and Gore, Game Experience May Change During Online Play, Violence)
BBFC Rating : unknown
IFCO Rating : unknown
PEGI Rating : 16 16 (Content Indicator: Violence Violence)
VET/SFB Rating : 18 (Square) 18 (Square)
CERO Rating : unknown
USK Rating : 16 16
OFLC (Australia) Rating : MA15+ MA15+
OFLC (New Zealand) Rating : R16 R16 (Descriptors: Violence)
FPB Rating : unknown
GRB : unknown
CCE (IGAC) Rating : unknown
COIAO Rating : unknown
ELSPA Rating : unknown
aDeSe Rating : unknown
Kijkwijzer Rating : unknown
SELL Rating : unknown
DJCTQ Rating : unknown
KMRB Rating : unknown