I used this site quite a bit when I was bored at school. You can play various game and Watch games here (assuming you still have flash player or a browser that can read flash. Also it does not work on mobile). The Zelda one is quite inventive for a simple game and Watch game.
This is a great way for preservation, since game and watches end up being expensive as hell and thus , disregarded by many retro gamers.
Well, I think we may have lost another piece of preservation. I know retroarch has a game and Watch emulator, but I loved how this one really loolef like the real deal. i hope some one gets this to work with the flash emulator.