SUPER MARIO 64: Playable Fan Made HD Upgrade

For developer Roystan Ross, what started out as just a controller demo turned into a full HD visual upgrade of the first level of Super Mario 64. If that isn't impressive enough, you can also play it on Windows, Mac, Linux, or in your browser. The whole project uses Unity, which is the most widely used and platform agnostic game engine out there. To download Ross's controller demo checkout the project page.

Sony and Microsoft have made several HD remixes/upgrades of their best selling games. Personally, I'm not that interested in revisiting Nintendo's older games in an "upgraded" fashion. I'd rather keep classics as they are. I'd much rather have a next-gen/Wii U version of Zelda or Super Mario.