Hey, thank you for the feedback! :) And thank you for also letting me know the Mac version works :) I'm happy you liked the music, honestly I found it fit the game perfectly (my jam is usually more beats and House haha, but I felt Heavy Rock/Metal fit this game better) and I had the music purchased so it was perfect :) Yeah, rewinding needs some tuning and it would already be done if not for the lock on updates :) It's a simple matter of me adjusting the number of recording frames (probably by a factor of 10) and smoothing the movement too by fixing a little bug :) For the best run on the second level you definitely need speed and you really can't miss more than one speed boost (and no braking) to achieve the velocity needed for the final bounce off the exit portal. You can definitely do all levels without speed, you could in theory move at minimal velocity and take 10 minutes for each one, but the best scoring will probably come from high speed and rewinding effectively :) I play tested but I know for sure others will crush my score as I'm not the best at my own games almost always lol :)
Thank you again for playing and for the feedback! :)