It's cute. I liked the art behind the characters and the skybox, it's really fitting with the atmosphere. It worked for me on browser after I waited a little while for it to load as instructed.
As others have said, you could try to add a tutorial so it's more clear what the player has to do. I found out but it took a bit of trial and error. You could also add audio (maybe it was there but I didn't hear anything on the browser version).