Spin around to dodge the obstacles. Don't be fooled by the slow start, it keeps on accelerating afterwards !
right touch: turn clockwise.
left touch: turn counterclockwise.
Better on https://sulfurous.aau.at/html/app.html?id=177914226&turbo=false&full-screen=true
All credits to SBissay for this very cool game. I just changed controls in order to run it on a touch screen.