It's seriously high quality for the 72 hours jam, it's amazing.
One thing I have is that it would be perfect with a sharp sound to notify you that the Chain is full (and maybe make it briefly flash too, I'm confident it'll pop out even in peripheral vision).
Other thing, if you reset while Laser is active, all items will be Golden Items until you Laser again.
But wow, stage is so well thought out, really catchy mechanics, game is a blast.
Btw what's the name of the stage theme? I really like it.