Mario in Time is Ticking
Original title: Super Mario Bros.
Platform: Nintendo Entertainment System
Region: USA (Update Hacks)
Media: Cartridge
Controller: NES Gamepad
Genre: Platformer 
Gametype: Hack
Release Year: 2007
Hacked by: Googie
Version: 1.0
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Here's a hack that's only 6 levels long and the object of the game is you gotta beat the levels before the 99 seconds run out. Please read the readme for more information that's in the zip file.

Enjoy?

http://www.romhacking.net/hacks/306/