thank you iandaprix !
I think I simply forgot to enable pixel rounding in C3 and I really wanted to add pad and browser/laptop friendly controls.
I'm also aware of music issue on browser, I think it's due to the compression I used.
It will stay like this for the jam (vacation time!) , but I'm looking forward to add this in a nearly futur.
The font is the smallest I managed to do in order to be readable ;)
Did you tried the small level editor at the end ?
Anyway, I'm glad you enjoyed this and I thank you again for your great feedback.