The Super Mario plugin installs a small game icon in your chrome browser.
Just click on the link at the right of the address bar and your game starts.
It is a great choice when you are tired of your boring work and want a quick small break to change the mood. So download the  Super Mario plugin for your  Google Chrome browser.
This flash version of Super Mario is fully playable and includes many game levels. It also features:
- Game controls customization
- High and low graphics quality settings
- Levels resuming
Game controls and instructions for Super Mario are very simple.
- Use Left/Right/Up/Down key to Move the  character.
- Run/Pick S (Hold for high jumping)
- Jump A
- Pause/Resume Space
Here is the direct link