Otherwise worked fine with secondary/alternate mouse button. So not really a big issue.
Thanks for the feedback @rvklein! I agree those controls aren't particularly intuitive yet, I'm only just getting into touch game development so will hopefully refine this stuff in future. I think Neon Tone is completely broken on touch screens, to be honest with you I only ever designed it with keyboard/mouse in mind at the time. More content to come soon :)
I really like the aesthetic of your site. You can tile the background in just the x direction btw. The pink lines stop abruptly on resoltions wider than 1920p