Fun little game! It mainly needs some more content right now, otherwise it’s not really something to play for more than a minute. Something like powerups, or maybe enemies to dodge? Also, it would be cool to have a high (literally haha) score depending on how far you climb.
One more thing is that it’s not intuitive that the screen loops horizontally. The first time I thought it was a bug. Maybe make the edges where the screen ends a different color?
EDIT: just realized there is a high score, however for me it is largely obscured by the top bar of my browser and I couldn’t resize it to make it visible