The game's nice, but after completing the first four levels catching all the gems, I'm already stuck at the fifth, because I'm unable to descend. Tried to check for hidden mechanics, jumping on clouds, against walls, holding the up arrow while jumping and everything that crossed my mind: nothing.
Came here to seek answers: turns out there's no such command as go down, but at the same time the gif you uploaded does it without hesitation, solving the level with the same easiness with which you should be able to solve all the starting levels.
Now, is this a problem on my side, or is this a bug? Cause I tried every key of they keyboard and failed miserably.
p.s. I'm playing on a macbook, so maybe that's kinda my fault for using mac to play games