Best Games Ever: The Legend of Zelda
The original Legend of Zelda, on the Nintendo Entertainment System, was a revolutionary game when it was released. It was the first game to feature a battery backup for saving, and one of few games of the time to feature a large, open world that could be explored freely. The came contains nine different dungeons that can be played in (almost) any order, and a much harder "second quest" unlocked after beating it the first time.
The Legend of Zelda is one of the best games ever because of its combination of fast-paced action, exploration, and puzzle-solving; none of the dungeons are a simple "walk in a straight line and press A" style, instead all requiring some degree of secret-finding and resource management to complete. Also, the game’s innovative inventory system led to a large range of treasure being available, some better than others, and a variety of different ways to fight the mobs.