Zelda II: The adventure of Link

The second installment in the The Legend of Zelda series was developed and published by Nintendo for the Famicom in 1987. It is a direct sequel to the original The Legend of Zelda. Again involving the protagonist Link, on a quest to save Princess Zelda.

Unlike the original Zelda games, the top-down perspective is replaced in favour of side-scrolling platform action. The game was released in North America for the NES in late 1988.

Original description:
The land of Hyrule is in chaos. As Link, you'll be sent on a treacherous journey to return six precious Crystals to their origins in six stone statues. Only by defeating the guardians of the six palaces will you gain passage to the seventh Palace, take on the ultimate challenge that awaits you and wake the Princess Zelda from her sleeping spell. On your way, helpful villagers will offer clues and secret messages invaluable in your quest. As you guide Link through the levels of Hyrule, close-ups and overviews will enhance your video vision. Are you up to the challenge?

In the tradition of the Legend of Zelda, The Adventure of Link is one of the most challenging video games we've ever created. To help you keep up with the action. Nintendo's exclusive Extended Playing Power means LINK is programmed to remember everything you find on your journey, so you never have to start your search empty-handed.

Instructions

Enter - start (pause);    Arrows - move;    Z - jump;    X - attack;    Esc = exit fullscreen;
Space - selecting main/sub screen (switch);

You can change keyboard settings, save (F5) and load (F8) the game.
Put your mouse over the game and choose your settings, you can also play the game in fullscreen.