Contra ReBirth [Gameplay] - IGN
Contra III: The Alien Wars, Contra Wiki
Contra Games - IGN
Super Contra [Gameplay] - IGN
Contra ReBirth [Gameplay] - IGN
Super Contra, Contra Wiki
MGS1 Graphics Comparison // IGN Preview vs. some Longplay Video from a year ago : r/metalgearsolid
Contra - IGN
Contra ReBirth [Gameplay] - IGN
Contra: Operation Galuga - IGN