Ittle Dew 1 and 2 are nice parody games of classic Zelda. They're very item based puzzle oriented and the world is pretty much open but restricted to wherever you're able to progress with your current items. They're both on GOG (I know one of them is for sure) which makes them very easy to pirate if you know where to look. If you like Adventure Time the game Adventure Time - Secret of the Nameless Kingdom is a great Zelda gameplay inspired game. It's pretty item puzzle heavy too. (in a nice satisfyingly challenging way) You don't particularly have to know anything about the show to play it. It's got a version for PS Vita and PC, but the game was removed from Steam. It's hard to find a download of it, but I believe it can be found on an old post on IGG Games. As for older stuff I second the Neutopia games from TurboGrafx 16/PC Engine. Also check out the first Alundra game and Brave Prove for PSX. You might be pleased to know that there's actually an official SNES remake of the first Zelda game that has updated graphics and I believe diagonal input iirc. It uses the BS-X Satelliview add-on and you can even play as Zelda in it if you want.