Mods for Crysis have added obstacles and power-ups, changed rules, and even tried to give the game a makeover. This Crysis mod takes a different approach -- it re-creates the DeLorean from the Back to the Future movies and puts you in the driver's seat [via Crymod]:

A member of the Crysis forums named Tirido created this adaption of this increasingly pliable game engine. You even have to turn on its time circuits to take a trip in time!

Now all we are missing is a Teen Wolf mod for The Sims 3.