Even though it's already breezed through it's original funding goal and met it's first stretch goal in just a couple of days, you should consider checking out (and throwing your money at) SUPERHOT. SUPERHOT is a time-distorting first person shooter, where time only moves when you do. Face off against waves of red guys by standing still and plotting the best course of action to dodge their red bullets and fire your own right back at them. Making it just as much a puzzle game just as it is a shooter. It's already won a few awards at a couple of gaming festivals, so it's got some pedigree to it if that matters to you.
Just know that you're doing yourself a disservice if you don't at least check out the prototype.