Nintendo wraps its run of summer 1987 console masterpieces with the third entry in its not-quite-Black-Box series: Metroid. Playing like a midpoint between Super Mario and Zelda but with a flavor all its own, Metroid continues the trend of NES action games striving to present players with something more substantial than arcade-style test of twitch reflexes. (Stay tuned for the other half of this retrospective next week.)