Really neat casual game. Easy to play. You could polish it and publish on mobile. One suggestion just for the jam version. Make the mountain move parallex and also try to add foreground elements and some cloud to make the movement more apparent. Right now, unmoavable background and lack of foreground elements make the player look like he's staying in one place. Also add more variaty in the future version with enemy and more obstacles. Apart from that, it was really a fun game.