To answer the question, my lens/review on the feature is two lenses. "If" there were in-game prompt that there 'is' a rewind feature, it'd have helped my rating. And given the display being 'mobile' featured, if there were a 'means' to do that same feature on mobile. Then that would have helped as well (like say, "double tap and hold"? Or rewind effect on double tap?)
That aside, if nothing else. The game-play was at least fun, in an arcade manner. Once the controls were found (in-game, or via proxy/README file on controls.) Other than that, I'll stick with my initial statement, in terms/lenses for the game's condition just after the jam. But no doubt if it's good enough, you can easily do post-competition updates to the game itself.