This Super Mario Brothers Flash online game is 2.38 MB in size, so please allow plenty of time for it to load...
See the instructions in the game for details of how to play. Kill the enemies (other than the Piranha Plants) in each screen in order to go on to the next one. Be very careful, as you only have one life for all the levels, and when you die it's game over! You will need to press the F5 key to reset the game if you do die.
Here is a Super Mario Brothers desktop wallpaper picture (800 x 600 pixels):
To use this picture as your desktop wallpaper, right-click on it with your mouse and then select "Set as Windows Wallpaper" or "Set as Background", or whatever similar option your particular browser provides in the right-click pop-up menu.
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