SUPERHOT Fallout is the mod for Fallout: New Vegas, where time moves only when you move. Dodge bullets. Take out your enemies. One step at a time. ©
I've downloaded this mod on Nexus. I have to admit, this is an amazing mod that faithfully adapts its source material.
The fact that the modder managed to implement the gameplay mechanics to such a degree in New Vegas' engine is a testament to his skill.