As I mentioned on the page for it, I really liked this! I think I've played it more than any other game from the jam so far.
I thought pretty highly of it from the core gameplay mechanics and how well you introduced new concepts. I was impressed with how many well thought out and challenging levels you managed to make in such a short amount of time!
The only very very minor improvement to the gameplay you could possibly make is some indication of which way the coloured walls will move once a button is pushed (some moved in a way i didn't expect and then i had to restart the level; but it was really such a minor issue because the UI was so crisp and quick, it was easy to restart and get back into it).
Well done!
Viewing post in LAST <> STEP jam comments
If you decide to review my game (which I'd appreciate, but dont expect by any means) you can play a Web GL version here: https://moocow17gmailcom.itch.io/rewind-bullethell-web-version (it's exactly the same as downloadable version, which is the official game jam submission, bugs and all... but obviously saves you having to download anything)