Interesting but I think the puzzles are way too obtuse (I couldn't get anywhere without the hints) and I don't think the timer swapping you between timelines really works as a mechanic. To me it only makes the game more annoying without really adding anything. Maybe if it put you back to where you were in each timeline every time it changes, to stop you having to solve the same puzzles over and over, it would work better? It might also help to have a button to swap timelines, to save the player having to spam-hop just to get to the timeline they want.