Have You Played FulledScreenMario.com Yet?
Looking for fun at work, or anytime? Play a game of Mario over at FullScreenMario.com.
According to the website, Full Screen Mario is a fully HTML5 remake of the original Super Mario Brothers.
You can play the original levels, play through some of literally millions of possible random maps, or create your own using the level editor.
That's right, you can create actual levels. AMAZING.