i believe these can be very interesting, I've done one and I would like to see people beat it.

I've done score runs, which is essentially a speed run aside from the fact that you can sometimes kill yourself when you messed up a level to attempt to get a higher score on it. 39399 is my best score, which is something like 21.4 seconds per level on average. I believe it's the second best score in the world, behind 394xx by Master A1.