The world I was in had a long roller coaster run around the outside. Nothing special, just a big counter clockwise loop. I worked my way up to the top, then mad

The world I was in had a long roller coaster run around the outside. Nothing special, just a big counter clockwise loop. I worked my way up to the top, then made a wall in the run and started pitching people off it into nothingness (a bunch right arrows, then a pit. And I would shove people off as soon as they came within editing distance. So I was sort of playing King of the Hill for a while. Then I decided to start exploring the world without movement keys, ie only adding movement arrows, pits, and slow-down dots. I got pretty good at it. Every now and then I would land on someone and bring them along for the ride, until they hit a key. Sometimes we would land on some interesting loops other people made. I was just trying to keep my speed up. That was kind of like Rollercoaster Tycoon.