I said I'd play it tomorrow but was intrigued, also one of the few games that's run well for me. (I've held off rating a lot just because a lot of unity webgl games don't seem to run well for me, but I'm aware it's a me issue).
I think it's pretty fun and even has potential as a speed game with a lot of movement to optimise to clear the levels quickly.
My main complaint is the collision detection (might be a me issue though). Without being particularly close to edges, I wouldn't be able to jump and simply fall down. I also got stuck once on a platform. But the main mechanic has a lot of potential, there just seems to be a few small bugs, like the position the spikes freeze in on one of the levels weren't consistent for me on the next life, where they'd stop in a different position than I'd stopped them previously.
Sometimes waiting for the ghosts can get annoying, especially when having to set up a puzzle again due to slipping off an edge. Maybe some kind of rewind mechanic to make a death not count to prevent that for puzzles that require multiple ghosts being set up?