Code a mobile friendly game with LittleJS

Hey all! I hacked together a super simple game last weekend, which I thought lent itself to a tutorial. So, I also wrote up a tutorial, which can be found here: https://eoinmcg.github.io/little-ski/tutorial.html and the game: https://eoinmcg.github.io/little-ski If anyone has the time and inclination to check out the tutorial, I'd really appreciate any feedback! Thanks! p.s. the github repo: https://github.com/eoinmcg/little-ski/