People are recreating the basic format in all different mediums: one example. The major elements would seem to be the main character at the bottom, barriers to the left and right, and a column of three diamonds going straight up.
It's SOMETHING from a video game I'm 99% sure; most likely either Celeste or Deltarune Chapter 2b. I just can't seem to track down the originating post, which I also suspect was on reddit.

