Super Mario All-Stars + Super Mario World is a compilation title for the Super Nintendo Entertainment System. It includes all the games from Super Mario All-Stars, as well as Super Mario World. It was released in December 1994 in North America, 1995 in Europe, and was never released in Japan. You can save your data to your browser. Click the settings icon and press "Save State Location", then change it to "Keep in Browser". You can enter fullscreen by hovering over the game and pressing the fullscreen button in the bottom right If pressing enter causes the game to tab in and out, just click on the middle of the game to refocus.