Stunning, amazing, AMAZING gameplay loop. This is extremely good game feel and fun. Like Super Hexagon, or Jumpgrid. There's something very good here.
I don't know if a score is necessary, as I want to keep coming back just to see what happens next. But it could help, like the above games I mentioned. Except Jumpgrid, I enjoy just to see all the levels.
I love that you can skip jumps. I don't know how I feel about diagonal - it makes it maybe too difficult at the start. I would play this more, but it's hurting my fingers on keyboard too...
Well done!