Mobile friendly, works on desktop

I'm doing this thing where I build loads of small games before I try building a huge game. In this spirit, I need to make good choices about where I invest time. I want the games to work well on mobile, because that's where my kids play; so I'm trying to make the Sprout UI look and work the best on phones and tablets (but, particularly phones). It'll still work on desktop, but the UI might not be the best there. *shrug*

here's a little demo of how that's looking: demo