Fallout 4 is still all the post-apocalyptic rage (something I’d still love to do something with, possibly in video format) and recently released a trailer for a huge chunk of DLC. But let’s not abandon the Western wastes just yet. If you’ve seen the game SuperHot (the demo is here, and if that won’t work on your browser, a trailer is here) then this soon-to-be released mod for New Vegas will seem really familiar. Now, (warning: the embedded video on this page is like the “Bloody Mess” perk turned up to 11) you can make time move when you move as you depopulate the Mojave. That article also has links to other projects of a similar nature, including making a New Vegas choose-your-own-adventure via YouTube video clips.
I could see several first-person shooters having fun with this, especially Half-Life 2. The Gravity Gun would be an even more interesting weapon with time-bending mechanics up and running.