For anyone that grew up with the gold NES cartridge for the original Zelda, and the real Final Fantasy games (1, 2 and 3, maybe even 7), you owe it to yourself to check out the game Evoland on steam.
It's a tribute to those games. It's a cool concept. Basically it starts out in monochrome and as you progress and find treasure chests you unlock 'game technology.' For example, you find things like 256 color graphics, and 8 bit sound, and as you progress it gives you more and more modern features like inventories, until you finally wind up in a 3D HD adventure game. It's short, and an indy game, but it's very inexpensive and a nice nostalgic tribute to the games that we used to love!