Really fun game! I *LOVE* Time travel stuff! We actually really wanted to make something time-travelled, but couldn't find a way to connect it to this theme (although we've managed for basically every other theme we could vote on). The game is fun and the puzzles are quite challenging and require good execution, which makes it quite challenging (the fun kind of challenging). The only two issues i have with the game is the fact the the time-stop is time based (i think it would've been a lot more forgiving to let the player disable it themselves instead of having to wait out a timer), and the lack of checkpoints. It would've also been a cool thing to add foresight and hindsight where objects from the past and future are shown transparent, but that's just a thing i would've added if i'd were making something similar, so that doesn't affect my rating, just saying it as a suggestion
TL;DR: Great job! awesome game and awesome idea.