I recently played an indie game called Iron Danger that allowed you to rewind time.
It was a party based real-time-with-pause tactical RPG. So you'd pause, command your 2 party members to use their skills and then rewind if things didn't go exactly right.
It led to combat being a really interesting puzzle where you're playing with the timing of skills to block a hit at the right moment, get a knockdown off before an enemy hits you, or trying to position your characters just right.
It's a nice twist on the typical tactical RPG combat that sort of merges turn based and RTWP combat. Timing matters, where normally in a RTWP combat you wouldn't have the ability to fine tune your actions, and in turn based timing doesn't matter at all.