NESoid, as the title of this post pretty obviously suggests, is a NES emulator for Android phones. Other that that, you'll be pleased to know it's both pretty excellent and very freeware. Besides letting you enjoy the multitude of classic games released for Nintendo's 8-bit wonder, NESoid also sports a variety of smart features that let you save your game, play online, use cheats, customize controls, emulate the light-gun and even run games in faster speeds. You can download NESoid right here. Do so!